IS_PROFILE_PAGE error shows up in user profile

[greenbeatty]

This error displays in the user's profile when the debug_log is set to false:

Warning: Use of undefined constant IS_PROFILE_PAGE - assumed 'IS_PROFILE_PAGE' (this will throw an Error in a future version of PHP) in .../wp-content/plugins/avatar-manager/avatar-manager.php on line 295

The site owner is using Divi theme with membership plugin, plus some other Divi related plugins. When I set the debug_log to 'true' the plugins threw out a lot of notices and warnings that created a large file very quickly, about 500MB within 1 week. We have reported to the developers and their responses are to, basically, disable the debug_log.

I set the debug_log to 'true' - and the avatar-manager error disappeared from the user profile page.

I cannot keep the debug log set to true for too long. What to do to remove the error from the user profile? We don't want clients to see the error.