Why does Peretsali work with form settings in the admin panel of the Bitrix infoblock?

Question

1C-Bitrix

The settings for tabs and the appearance of the infoblock form stopped working. these are the errors they give out, I checked the entire database, everything is in order, I re-uploaded the new main and iblock modules and the bitrix / js / folder, everything is the same.
Where to dig I do not even know.

Answer 1

In the settings of the main module, play with the checkboxes, the problem is js merging. Then discard the cache.

Some other hostings can use js acceleration