Error rendering the page

We are working on deploying our solution via the web client.

I’m getting the following error when I try to enter a form. This is the error I get (below). How do I determine what is causing this in our code?

org.apache.wicket.markup.MarkupException: Tag '<div servoy:id="servoywebform" id="form_pos_invoice_oneshot">' (line 12, column 1) has a mismatched close tag at '</servoy:panel>' (line 175, column 1)
    [markup = Markup[solution:mod_pos, fullpath:/servoy-webclient/templates/default/mod_pos/pos_invoice_oneshot.html]
    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    
    <html>
    <head>
    <title>i18n:paygo.display.invoice_id - Servoy</title>
    <servoy:head>
    </servoy:head>
    </head>
    <body id='servoy_page'>
    <form id='servoy_dataform'>
    <servoy:panel>
    <div servoy:id="servoywebform" id="form_pos_invoice_oneshot">
    <div id="sfw_form_pos_invoice_oneshot" style="position: absolute; height: 0px; right: 0px; left: 0px;"></div><div id="sfh_form_pos_invoice_oneshot" style="position: absolute; bottom: 0px; top: 0px; width: 0px;"></div><div servoy:id="View">
    <div servoy:id="sv_afd235b0_54ea_49d8_90a5_8818ca7d338b" id="sv_afd235b0_54ea_49d8_90a5_8818ca7d338b" class="formpart">
    <span servoy:id="sv_4058a8fb_0399_4f72_ba11_2f512fcc5131" id="sv_4058a8fb_0399_4f72_ba11_2f512fcc5131"></span>
    <span servoy:id="sv_f58c53ea_725b_4d1d_a176_7ad7fd120028" id="sv_f58c53ea_725b_4d1d_a176_7ad7fd120028"></span>
    <span servoy:id="sv_74a1db1f_3eba_4929_ba13_7b01d4659885" id="sv_74a1db1f_3eba_4929_ba13_7b01d4659885"></span>
    <div style="white-space: nowrap;" servoy:id="sv_e37a4c67_8a07_49d4_a72a_28b094e386c2" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_6132ae4a_153f_483c_b24d_eec541669025" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_c6eea37e_56a8_4e5a_b901_de319ab3ca8b" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_10220ca6_ab45_447c_b845_63e2c8aaed3c" class="label"></div>
    <div servoy:id="sv_63960901_5284_4d04_85c7_8464416bef39" class="label"><div align="center">
    %%i18n:servoy.menuitem.forward%%
    </div></div>
    <div servoy:id="sv_2ec27b4c_7553_49c6_9b40_036c6f331b61_wrapper" id="sv_2ec27b4c_7553_49c6_9b40_036c6f331b61_wrapper"><input servoy:id="sv_2ec27b4c_7553_49c6_9b40_036c6f331b61" name="globals.g_custvend_search" class="field" type="text" onfocus="Servoy.Utils.doSelect(this)"/></div>
    <div servoy:id="sv_90255319_7573_412e_9147_ff66a8cb0f2e" class="label"><div align="center">
    %%i18n:servoy.menuitem.back%%
    </div></div>
    <div style="white-space: nowrap;" servoy:id="sv_0f0df23a_b3b5_43b4_9981_178d19c486e8" class="label"></div>
    <div servoy:id="sv_9f46e1bf_3ad2_4a20_91b6_6cfedaa2a618" class="label"><div align="center">
    %%i18n:paygo.cmn.home%%
    </div></div>
    <div servoy:id="sv_ef81f280_9844_41ed_b9fc_6c266c57e4f6" class="label"><div align="center">
    %%i18n:paygo.mmnu.edit_cust%%
    </div></div>
    <div style="white-space: nowrap;" servoy:id="sv_9e69b2fc_430f_4b3a_a35d_ca6e7af2c960" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_db594d03_1506_4048_9042_a99a16135e99" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_53fb016b_6751_4f2b_80f0_70bcec1ccad9" class="label">i18n:paygo.tt.search_customers</div>
    <div servoy:id="sv_3f799a9f_f5b9_4bf4_97b0_e1d8fb37c828" class="label"><div align="center">
    %%i18n:paygo.mmnu.new_cust%%
    </div></div>
    <div servoy:id="sv_a66aa0b7_93b8_4703_842b_536739e086eb" class="tabpanel">
    <div servoy:id="webform" style="overflow: auto;position: relative" class="webform"></div></div>
    <div servoy:id="sv_0f4ac4e9_f79c_41c0_b839_2c22e5fe6952_wrapper" id="sv_0f4ac4e9_f79c_41c0_b839_2c22e5fe6952_wrapper"><input servoy:id="sv_0f4ac4e9_f79c_41c0_b839_2c22e5fe6952" name="trans_subtotal" class="field" type="text"/></div>
    <div servoy:id="sv_8939cde4_bd7b_4052_baa7_386c13b2fa2b_wrapper" id="sv_8939cde4_bd7b_4052_baa7_386c13b2fa2b_wrapper"><input servoy:id="sv_8939cde4_bd7b_4052_baa7_386c13b2fa2b" name="trans_total_taxable" class="field" type="text"/></div>
    <div servoy:id="sv_a36229f3_0a78_40dd_bfee_626fca2b2c11_wrapper" id="sv_a36229f3_0a78_40dd_bfee_626fca2b2c11_wrapper"><input servoy:id="sv_a36229f3_0a78_40dd_bfee_626fca2b2c11" name="trans_total_nontaxable" class="field" type="text"/></div>
    <div servoy:id="sv_4bfdfaf8_64dd_44c8_9161_4556614ca3be_wrapper" id="sv_4bfdfaf8_64dd_44c8_9161_4556614ca3be_wrapper"><input servoy:id="sv_4bfdfaf8_64dd_44c8_9161_4556614ca3be" name="trans_tax_total" class="field" type="text"/></div>
    <div style="white-space: nowrap;" servoy:id="sv_8ab18ca4_3304_4a20_b3eb_517a10b789a1" class="label">i18n:paygo.inv.total_tax</div>
    <div style="white-space: nowrap;" servoy:id="sv_c2492d15_f583_4321_8d39_e7824873ad62" class="label">i18n:paygo.inv.grand_total</div>
    <div servoy:id="sv_e51b27dc_1047_40f3_8c76_11389206be91_wrapper" id="sv_e51b27dc_1047_40f3_8c76_11389206be91_wrapper"><input servoy:id="sv_e51b27dc_1047_40f3_8c76_11389206be91" name="trans_grand_total" class="field" type="text"/></div>
    <div style="white-space: nowrap;" servoy:id="sv_449b5e8d_e1b3_41a3_b3e0_f77816e0e3a2" class="label">i18n:paygo.inv.received</div>
    <div servoy:id="sv_b138bf5d_85af_48dc_82b7_8240bf786e8f" class="tabpanel">
    <div servoy:id="webform" style="overflow: auto;position: relative" class="webform"></div></div>
    <div style="white-space: nowrap;" servoy:id="sv_c75d35eb_77bb_4e0b_b5da_4f6ff8d352b0" class="label">i18n:paygo.cmn.print_output</div>
    <div servoy:id="sv_78912168_9f3f_40f0_9b8b_7a3d1cfca37b" class="tabpanel">
    <div servoy:id="webform" style="overflow: auto;position: relative" class="webform"></div></div>
    <div servoy:id="sv_4b106ed0_3f8d_4869_b3f7_f89dabcca86f" class="tabpanel">
    <div servoy:id="webform" style="overflow: auto;position: relative" class="webform"></div></div>
    <div style="white-space: nowrap;" servoy:id="sv_284e277a_263f_471c_b94b_0658f7d0c074" class="label">i18n:paygo.display.created</div>
    <div style="white-space: nowrap;" servoy:id="sv_4c9591c9_60e3_43bd_b294_4e87f4ee1f55" class="label">i18n:paygo.display.modified</div>
    <div style="white-space: nowrap;" servoy:id="sv_2d1bbb2b_5f27_4682_8f93_16eb506b163f" class="label">i18n:paygo.display.site_id</div>
    <div style="white-space: nowrap;" servoy:id="sv_304f8393_96f0_4dfc_bc36_793baf70910e" class="label">i18n:paygo.display.cji_id</div>
    <div servoy:id="sv_5a6136d2_ce73_4202_95ff_0c3de948dad3_wrapper" id="sv_5a6136d2_ce73_4202_95ff_0c3de948dad3_wrapper"><input servoy:id="sv_5a6136d2_ce73_4202_95ff_0c3de948dad3" name="trans_to_payments.total_payments" class="field" type="text"/></div>
    <div style="white-space: nowrap;" servoy:id="sv_c2a86866_33a7_405d_8bfa_2d82e4979163" class="label">i18n:paygo.inv.balance_due</div>
    <div servoy:id="sv_a861b96f_3e74_496d_9b85_4651e6c506ab" class="tabpanel">
    <div servoy:id="webform" style="overflow: auto;position: relative" class="webform"></div></div>
    <div style="white-space: nowrap;" servoy:id="sv_3932490b_1e5a_4ef7_98b8_a8545ac816aa" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_d7c619e0_aadb_4758_b364_8b8fed39fa98" class="label"></div>
    <div servoy:id="sv_52bc36bd_5998_4b06_84ea_00fd0d396c13" class="label"><div align="center">
    %%i18n:paygo.inv.return%%
    </div></div>
    <div servoy:id="sv_85e8a259_825e_4dc6_9549_14cf96c840c9" class="label"><div align="center"> %%i18n:paygo.inv.open_invoices%%</div>
    <div servoy:id="sv_71438820_cc26_4630_ab92_136e5f793fa6" class="label"><div align="center">
    %%i18n:paygo.inv.new_invoice%%
    </div></div>
    <div style="white-space: nowrap;" servoy:id="sv_9dcecfa8_43b3_4fcf_b446_9406ec138a4a" class="label"></div>
    <div servoy:id="sv_db1f94f7_2d0b_4891_a2b0_5d95bb4015c1_wrapper" id="sv_db1f94f7_2d0b_4891_a2b0_5d95bb4015c1_wrapper"><select servoy:id="sv_db1f94f7_2d0b_4891_a2b0_5d95bb4015c1" name="globals.g_print_output" class="field">Combobox</select></div>
    <div style="white-space: nowrap;" servoy:id="sv_68a5942b_5eaf_4718_8a96_924f48b5ded6" class="label">i18n:paygo.inv.total</div>
    <div style="white-space: nowrap;" servoy:id="sv_c71a5ea9_f67f_4655_97a7_1e1af0b9a330" class="label">i18n:paygo.inv.subtotal</div>
    <div servoy:id="sv_0970addc_f62b_427e_84d4_d5ed2dff03c5" class="label"><div align="center">
    %%i18n:paygo.mmnu.delete_inv%%
    </div></div>
    <div servoy:id="sv_ad64d587_eb70_4b43_92e8_d7288d9e93b6_wrapper" id="sv_ad64d587_eb70_4b43_92e8_d7288d9e93b6_wrapper"><input servoy:id="sv_ad64d587_eb70_4b43_92e8_d7288d9e93b6" name="user_id_creator" class="field" type="text"/></div>
    <div style="white-space: nowrap;" servoy:id="sv_c5482004_3a20_4857_ab1e_758afa9e046c" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_43d528db_1552_45e7_967f_084d763b19dc" class="label">i18n:paygo.cmn.user</div>
    <div style="white-space: nowrap;" servoy:id="sv_f3910f26_fed3_47e7_8565_0f6a89297b88" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_6f22ad38_e400_4d40_9007_0ec8b31867fd" class="label">i18n:paygo.inv.total_disc</div>
    <div style="white-space: nowrap;" servoy:id="sv_7b921c5d_1e18_4ccf_93b2_6479ae367742" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_7d442d1f_346c_42b3_be2a_7a4980c02922" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_28c03298_6901_4ee2_99bf_fe276b4e3e66" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_64bb9329_bf67_4e23_9b5c_800d1683e657" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_83607386_e578_4ce4_986c_ec4211f9c7bd" class="label">i18n:paygo.display.id</div>
    <div style="white-space: nowrap;" servoy:id="sv_fe2fcaf5_0813_4e3f_bb72_3b54b0452719" class="label">i18n:paygo.trans_type</div>
    <div servoy:id="sv_1fd335e4_41ac_4e35_b7c8_21b9c3a0d8f7" class="label"><div align="center">
    %%i18n:paygo.inv.post_and_print%%
    </div></div>
    <div servoy:id="sv_bcfcf13b_3d35_4412_afa1_b7fe6d98fe56" class="label"><div align="center">
    Last Change Due & Invoice
    </div></div>
    <div servoy:id="sv_81dedb37_2ea3_41d9_97ea_56d4cfac67e1" class="label"><div align="center">
    %%i18n:paygo.inv.post_no_print%%
    </div></div>
    <div style="white-space: nowrap;" servoy:id="sv_e4ede3fa_2394_4f7a_8f1a_a1f56258c435" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_ac37f56d_c40c_4c9a_9336_4122fb952d8f" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_06bef367_1809_4cff_becb_310bc9720ea8" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_8efa417a_ea8c_4236_b194_4366cb556e72" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_a6cffca4_1975_49af_a716_5038408c0403" class="label"></div>
    <div servoy:id="sv_ad578ec8_9479_41c0_953a_a96f63f28853" class="label"><div align="center">
    %%i18n:paygo.inv.hold%%
    </div></div>
    <div style="white-space: nowrap;" servoy:id="sv_7c62fe02_0cfd_4a99_879f_a768fc522f32" class="label"></div>
    <div servoy:id="sv_d7688da2_1c3a_4bd1_8f88_53192b8699e1_wrapper" id="sv_d7688da2_1c3a_4bd1_8f88_53192b8699e1_wrapper"><input servoy:id="sv_d7688da2_1c3a_4bd1_8f88_53192b8699e1" name="trans_to_trans_status_values.trans_status" class="field" type="text"/></div>
    <div servoy:id="sv_b22a5129_0356_4b95_a6c2_2088464fc4a4" class="label"><div align="center">
    %%i18n:paygo.inv.release_hold%%
    </div></div>
    <div servoy:id="sv_4415be6d_aa1a_4f10_9cf7_bba06492595c_wrapper" id="sv_4415be6d_aa1a_4f10_9cf7_bba06492595c_wrapper"><input servoy:id="sv_4415be6d_aa1a_4f10_9cf7_bba06492595c" name="globals.lastChangeDue" class="field" type="text"/></div>
    <div style="white-space: nowrap;" servoy:id="sv_c9734118_17b0_4256_890c_eca8bedef490" class="label"></div>
    <div servoy:id="sv_e4735a46_c03e_4031_bd7e_4efafabd9b04_wrapper" id="sv_e4735a46_c03e_4031_bd7e_4efafabd9b04_wrapper"><textarea servoy:id="sv_e4735a46_c03e_4031_bd7e_4efafabd9b04" name="trans_to_notes.notes" class="field"></textarea></div>
    <div style="white-space: nowrap;" servoy:id="sv_fe1e5c52_0d2c_43f4_a57a_a94329aeb78f" class="label">i18n:paygo.cust.notes</div>
    <div style="white-space: nowrap;" servoy:id="sv_b4513556_0f36_42a1_888e_1f9dd981d4da" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_878133e2_338d_4548_85f4_8de28a7580b5" class="label">i18n:paygo.till_id</div>
    <div style="white-space: nowrap;" servoy:id="sv_32a62870_b1d0_4930_844e_39e7f4fca4bf" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_a2017f82_6dec_4ff1_9f85_2b122ac2baa2" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_7cb524ed_b828_4976_a639_ceb7205d5369" class="label">i18n:paygo.inv.status.quote</div>
    <div style="white-space: nowrap;" servoy:id="sv_dd953f7c_9c63_40cb_bd7e_92f928109975" class="label">i18n:paygo.ctc.spec_order</div>
    <div style="white-space: nowrap;" servoy:id="sv_e2d90eb2_eadb_45ee_b216_7e93b718f417" class="label">i18n:paygo.mmnu.repair_order</div>
    <div class="radioCheckField" servoy:id="sv_138fd39b_9b74_472a_9a74_81ea09b941a4" tabIndex="-1"><table cellspacing='0' cellpadding='0' border='0' width='100%' height='100%'><tr><td style='vertical-align: middle;'><input style="border-width: 0px; padding: 3px; margin: 0px; vertical-align: middle;" servoy:id="check_sv_138fd39b_9b74_472a_9a74_81ea09b941a4" name="special_order" type="checkbox"/><label style="border-width: 0px; padding-top: 2px; margin: 0px; vertical-align: middle;" servoy:id="text_sv_138fd39b_9b74_472a_9a74_81ea09b941a4"></label></td></tr></table></div>
    <div class="radioCheckField" servoy:id="sv_2c007ab6_55dc_4df3_bbfa_66f4d55b5e5d" tabIndex="-1"><table cellspacing='0' cellpadding='0' border='0' width='100%' height='100%'><tr><td style='vertical-align: middle;'><input style="border-width: 0px; padding: 3px; margin: 0px; vertical-align: middle;" servoy:id="check_sv_2c007ab6_55dc_4df3_bbfa_66f4d55b5e5d" name="quote" type="checkbox"/><label style="border-width: 0px; padding-top: 2px; margin: 0px; vertical-align: middle;" servoy:id="text_sv_2c007ab6_55dc_4df3_bbfa_66f4d55b5e5d"></label></td></tr></table></div>
    <div class="radioCheckField" servoy:id="sv_a82359f7_327e_42d0_939d_55aa22ac3ecc" tabIndex="-1"><table cellspacing='0' cellpadding='0' border='0' width='100%' height='100%'><tr><td style='vertical-align: middle;'><input style="border-width: 0px; padding: 3px; margin: 0px; vertical-align: middle;" servoy:id="check_sv_a82359f7_327e_42d0_939d_55aa22ac3ecc" name="repair" type="checkbox"/><label style="border-width: 0px; padding-top: 2px; margin: 0px; vertical-align: middle;" servoy:id="text_sv_a82359f7_327e_42d0_939d_55aa22ac3ecc"></label></td></tr></table></div>
    <div servoy:id="sv_b20ae07c_e7e5_4b63_8528_1b4a290a7256_wrapper" id="sv_b20ae07c_e7e5_4b63_8528_1b4a290a7256_wrapper"><input servoy:id="sv_b20ae07c_e7e5_4b63_8528_1b4a290a7256" name="trans_to_cust_vend.name_final" class="field" type="text"/></div>
    <div style="white-space: nowrap;" servoy:id="sv_c414c9cc_d68e_462c_8278_a921a58e9834" class="label">Total Items: %%trans_to_trans_lines.trans_qty_total%%</div>
    <div style="white-space: nowrap;" servoy:id="sv_dec75c28_1f0e_4cca_acaf_d221c377b8e6" class="label">%%trans_to_cust_vend.cust_vend_to_loyalty_rules.name%% %%trans_to_cust_vend.points_togo%%</div>
    <div style="white-space: nowrap;" servoy:id="sv_57b653ad_0d50_42b8_9ec9_bebbde2723ff" class="label"></div>
    <div servoy:id="sv_5f2b2aa3_9fcb_4010_92c5_1a2e031ecd30_wrapper" id="sv_5f2b2aa3_9fcb_4010_92c5_1a2e031ecd30_wrapper"><input servoy:id="sv_5f2b2aa3_9fcb_4010_92c5_1a2e031ecd30" name="total_points" class="field" type="text"/></div>
    <div servoy:id="sv_f2f96e43_8a53_4ca7_9c6d_c6c91f36fa06" class="label">%%i18n:paygo.cmn.current_loyalty_level%%: %%globals.pos_active_loyalty_id%%</div>
    <div style="white-space: nowrap;" servoy:id="sv_b773b652_4117_4c6b_9dcf_b39d56067780" class="label">i18n:paygo.inv.points</div>
    <div style="white-space: nowrap;" servoy:id="sv_a966d804_8da7_487c_adb9_0147bb50a5cb" class="label"></div>
    <div servoy:id="sv_46596c7f_e00a_4efd_ba66_b0b26a73d2ad_wrapper" id="sv_46596c7f_e00a_4efd_ba66_b0b26a73d2ad_wrapper"><input servoy:id="sv_46596c7f_e00a_4efd_ba66_b0b26a73d2ad" name="balance_due" class="field" type="text"/></div>
    <div servoy:id="sv_450036b7_e749_480a_8542_c33d31c411d3_wrapper" id="sv_450036b7_e749_480a_8542_c33d31c411d3_wrapper"><input servoy:id="sv_450036b7_e749_480a_8542_c33d31c411d3" name="trans_discount_total" class="field" type="text"/></div>
    <div servoy:id="sv_99a6e0ff_e967_4a8f_ac43_a7549afc9d87_wrapper" id="sv_99a6e0ff_e967_4a8f_ac43_a7549afc9d87_wrapper"><input servoy:id="sv_99a6e0ff_e967_4a8f_ac43_a7549afc9d87" name="trans_total_pretax" class="field" type="text"/></div>
    <div servoy:id="sv_13c04eba_0c3e_4a0d_8bd9_41111b0889b5" class="label"><div align="center">
    %%i18n:paygo.cmn.print_copy%%
    </div></div>
    <div servoy:id="sv_4d9bd054_ad73_4233_8a44_b0c26746fc17" class="label"><div align="center">
    %%i18n:paygo.inv.status.print_quote%%
    </div></div>
    <div style="white-space: nowrap;" servoy:id="sv_f52072d4_4d23_478a_bd0b_eafba7bc6175" class="label"></div>
    <div servoy:id="sv_052fc9df_fbd7_4dfc_9afb_b1b7ae1b87dd_wrapper" id="sv_052fc9df_fbd7_4dfc_9afb_b1b7ae1b87dd_wrapper"><input servoy:id="sv_052fc9df_fbd7_4dfc_9afb_b1b7ae1b87dd" name="trans_to_workstations.name" class="field" type="text"/></div>
    <div servoy:id="sv_f7951c24_eeda_4069_b279_783648fc1923_wrapper" id="sv_f7951c24_eeda_4069_b279_783648fc1923_wrapper"><input servoy:id="sv_f7951c24_eeda_4069_b279_783648fc1923" name="trans_to_sites.site_name" class="field" type="text"/></div>
    <div servoy:id="sv_a4024a7e_6e7e_403a_818b_d0ff5184f0ce_wrapper" id="sv_a4024a7e_6e7e_403a_818b_d0ff5184f0ce_wrapper"><input servoy:id="sv_a4024a7e_6e7e_403a_818b_d0ff5184f0ce" name="trans_id" class="field" type="text"/></div>
    <div style="white-space: nowrap;" servoy:id="sv_ddd4fc2b_f28f_4acc_938a_90a39206b27b" class="label">i18n:paygo.formname.invoice_oneshot_touch</div>
    <div servoy:id="sv_ec608162_3215_42b7_a042_a5757348b221_wrapper" id="sv_ec608162_3215_42b7_a042_a5757348b221_wrapper"><select servoy:id="sv_ec608162_3215_42b7_a042_a5757348b221" name="salesperson_id" class="field">Combobox</select></div>
    <div style="white-space: nowrap;" servoy:id="sv_a7ec4489_d326_4d79_939a_caa2b505cf39" class="label">i18n:paygo.cmn.salesperson</div>
    <div style="white-space: nowrap;" servoy:id="sv_5e02410f_6c84_48a8_a5d6_afe7b91aa714" class="label"></div>
    <div servoy:id="sv_2fa6a8f7_9c9a_4470_afbc_b622b980252d" class="tabpanel">
    <div servoy:id="webform" style="overflow: auto;position: relative" class="webform"></div></div>
    <div style="white-space: nowrap;" servoy:id="sv_0823b330_aea0_430f_92b3_325fef672ca8" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_778eedee_6048_4a1b_a94f_d3c02810cfa8" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_f117d8f2_e42e_46a1_96f6_c1e0e4624ae2" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_1ed25df1_5db7_4f14_8c47_5a85bbb912a1" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_8f3e56cd_96fa_4165_9121_bf93501ce1bd" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_a352cf0b_2dfc_43fa_9a09_04896ab2b93a" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_abcd757d_7def_4ed6_9146_55cd78fa0bf9" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_9b0a2c27_be45_4c5e_bafe_df12e515e913" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_a8ceea93_433f_4ede_a2a3_053afc5bb366" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_8c5badbb_9aed_4eac_955c_594c3ddf41cd" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_da714198_ca10_4002_af95_eff9dae004f2" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_c6a6a7af_2b8a_4571_9b78_8812d297cd2b" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_52cafef3_9c14_4970_99ac_2f65108176ff" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_2f8d5689_2411_45fc_97ba_7fdcf47ba861" class="label"></div>
    <div style="white-space: nowrap;" servoy:id="sv_60081702_fc25_4a92_ade5_d559aee6eae3" class="label"></div>
    </div>
    </div>
    </div>
    </servoy:panel>
    </form>
    </body>
    </html>
    , index = 487, current = [Raw markup]]
     at org.apache.wicket.markup.MarkupParser.parseMarkup(MarkupParser.java:397)
     at org.apache.wicket.markup.MarkupParser.parse(MarkupParser.java:274)
     at org.apache.wicket.markup.loader.SimpleMarkupLoader.loadMarkup(SimpleMarkupLoader.java:53)
     at org.apache.wicket.markup.loader.InheritedMarkupMarkupLoader.loadMarkup(InheritedMarkupMarkupLoader.java:62)
     at org.apache.wicket.markup.loader.DefaultMarkupLoader.loadMarkup(DefaultMarkupLoader.java:55)
     at org.apache.wicket.markup.MarkupCache.loadMarkup(MarkupCache.java:465)
     at org.apache.wicket.markup.MarkupCache.loadMarkupAndWatchForChanges(MarkupCache.java:561)
     at org.apache.wicket.markup.MarkupCache.getMarkup(MarkupCache.java:325)
     at com.servoy.j2db.server.headlessclient.WebForm.getAssociatedMarkupStream(WebForm.java:375)
     at com.servoy.j2db.server.headlessclient.MainPage.configureResponse(MainPage.java:872)
     at org.apache.wicket.Page.onRender(Page.java:1591)
     at org.apache.wicket.Component.render(Component.java:2528)
     at org.apache.wicket.Page.renderPage(Page.java:932)
     at org.apache.wicket.request.target.component.PageRequestTarget.respond(PageRequestTarget.java:63)
     at org.apache.wicket.request.AbstractRequestCycleProcessor.respond(AbstractRequestCycleProcessor.java:105)
     at com.servoy.j2db.server.headlessclient.WebClientsApplication$5.respond(WebClientsApplication.java:407)
     at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1260)
     at org.apache.wicket.RequestCycle.step(RequestCycle.java:1331)
     at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1438)
     at org.apache.wicket.RequestCycle.request(RequestCycle.java:546)
     at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:486)
     at com.servoy.j2db.server.servlets.Zl.doGet(Zl.java:8)
     at org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:138)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
     at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:554)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
     at java.lang.Thread.run(Thread.java:680)
    Caused by: java.text.ParseException: Tag '<div servoy:id="servoywebform" id="form_pos_invoice_oneshot">' (line 12, column 1) has a mismatched close tag at '</servoy:panel>' (line 175, column 1)
     at org.apache.wicket.markup.parser.filter.HtmlHandler.nextTag(HtmlHandler.java:148)
     at org.apache.wicket.markup.parser.filter.WicketRemoveTagHandler.nextTag(WicketRemoveTagHandler.java:60)
     at org.apache.wicket.markup.parser.filter.WicketLinkTagHandler.nextTag(WicketLinkTagHandler.java:94)
     at org.apache.wicket.markup.parser.AbstractMarkupFilter.nextComponentTag(AbstractMarkupFilter.java:82)
     at org.apache.wicket.markup.parser.filter.WicketNamespaceHandler.nextTag(WicketNamespaceHandler.java:73)
     at org.apache.wicket.markup.parser.AbstractMarkupFilter.nextComponentTag(AbstractMarkupFilter.java:82)
     at org.apache.wicket.markup.parser.filter.WicketMessageTagHandler.nextTag(WicketMessageTagHandler.java:81)
     at org.apache.wicket.markup.parser.filter.HeadForceTagIdHandler.nextTag(HeadForceTagIdHandler.java:79)
     at org.apache.wicket.markup.parser.AbstractMarkupFilter.nextComponentTag(AbstractMarkupFilter.java:82)
     at org.apache.wicket.markup.parser.filter.OpenCloseTagExpander.nextTag(OpenCloseTagExpander.java:58)
     at org.apache.wicket.markup.parser.AbstractMarkupFilter.nextComponentTag(AbstractMarkupFilter.java:82)
     at org.apache.wicket.markup.parser.filter.EnclosureHandler.nextTag(EnclosureHandler.java:76)
     at org.apache.wicket.markup.parser.AbstractMarkupFilter.nextComponentTag(AbstractMarkupFilter.java:82)
     at org.apache.wicket.markup.parser.filter.InlineEnclosureHandler.nextTag(InlineEnclosureHandler.java:70)
     at org.apache.wicket.markup.parser.AbstractMarkupFilter.nextComponentTag(AbstractMarkupFilter.java:82)
     at org.apache.wicket.markup.html.form.AutoLabelTagHandler.nextTag(AutoLabelTagHandler.java:36)
     at org.apache.wicket.markup.parser.filter.RelativePathPrefixHandler.nextTag(RelativePathPrefixHandler.java:116)
     at org.apache.wicket.markup.MarkupParser.getNextTag(MarkupParser.java:306)
     at org.apache.wicket.markup.MarkupParser.parseMarkup(MarkupParser.java:326)
     ... 37 more

FYI… this is in Servoy 6.0.3.

it seems a piece of your html that you insert it self is not correct:

%%i18n:paygo.inv.open_invoices%%

that is missing the