Problem with 1+ tab in the same panel

I’m trying to put more than 1 tab per panel, but when i put the 2nd tab, and go to the form, show me an error.

and can’t show the form, and showing this:

What i’m doing wrong? in the sample_user_navigation works perfectly. Thanks

This is an issue in the current release, see this post for a fix: https://www.servoy.com/forum/viewtopic.php?f=62&t=18752&p=101054#p101054.

Thanks for the answer, and sorry for don’t see the post.