hallo! We used finance and restora templates for joomla 4 and in user register form( when any guest wants to create account) we get this error 500 Error - Behavior::formvalidation Not Found. I am afraid that this error will be at any site of yours has been upgraded from joomla 3 to joomla 4 ...so could you please tell us how to fix it ...or provide new editions/ versions of all templates that were on joomla 3 and been upgraded to joomla 4 ....please help we have used many of them ...to upgrade our clients sites to joomla 4 and we have major problem with this.

we have Joomla 4.4.0 , Template finance 2.0.0 and restora 2.0.0 all last versions , Helix3 3.0.4 and all plugins up and updated , Page builder 3.8.9. Joomla core files and joomla core plugins are up to date . Template is compatible with joomla version , helix is up to date , page builder is compatible .

Pleaser help us to fix this error !!!