Same thing here:
I’ve resolved the immediate issue by entering recovery mode and disabling BackWPUp but now I can’t enable it without getting that critical error again.
Here is the error
An error of type E_ERROR was caused in line 27 of the file /home/nujlmb/sites/wp/wp-content/plugins/backwpup/inc/functions.php. Error message: Uncaught InvalidArgumentException: Cannot locate the template /home/nujlmb/sites/wp/wp-content/plugins/backwpup/views/notice/notice.php in template function. in /home/nujlmb/sites/wp/wp-content/plugins/backwpup/inc/functions.php:27 Stack trace: #0 /home/nujlmb/sites/wp/wp-content/plugins/backwpup/inc/Notice/NoticeView.php(47): backwpup_template(Object(Inpsyde\BackWPup\Notice\NoticeMessage), '/notice/notice....') #1 /home/nujlmb/sites/wp/wp-content/plugins/backwpup/inc/Notice/NoticeView.php(104): Inpsyde\BackWPup\Notice\NoticeView->notice(Object(Inpsyde\BackWPup\Notice\NoticeMessage), NULL, 'notice-warning') #2 /home/nujlmb/sites/wp/wp-content/plugins/backwpup/inc/Notice/DropboxNotice.php(29): Inpsyde\BackWPup\Notice\NoticeView->__call('warning', Array) #3 /home/nujlmb/sites/wp/wp-content/plugins/backwpup/inc/Notice/Notice.php(112): Inpsyde\BackWPup\Notice\DropboxNotice->render(Object(Inpsyde\BackWPup\Notice\NoticeMessage)) #4 /home/nujlmb/sites/wp/wp-includes/class-wp-hook.php(303): Inpsyde\BackWPup\Notice\No