The situation is very strange, I changed the memory size, but it did not help. also, the problem only occurs in the Pages section I also made a second server and reinstalled the theme, but nothing helped. Theme support does not provide any clear advice. I don’t know what else to try in this situation.
At the moment I tried to solve it through the advice in the topic -https://wordpress.org/support/topic/uncaught-typeerror-cannot-read-properties-of-undefined-reading-handlers/. It did not help
