Feedback form crashed (cf7)?

Question

WordPress

The feedback form is gone. WordPress site, feedback form - cf7. It is not known when it happened, but over the past few months nothing has been touched in the code and there have been no plugin updates.
Error screen from the console

Infinite Scroll plugin installed - deactivating the plugin did not change the situation.
what could be the problem and where to look for the error?

Answer 1

Hello!
- Enable debug via wp-config, look for PHP errors
- Disable all plugins except CF7 and enable them one by one and check.
- If this does not help, then change the theme to the default and check.
- Update plugins, VI and theme and check