Problem/Motivation After upgrading my php verision to 8.1 and clearing cache the flags module does not work as expected. Site crashes with warnings in watchdog:

Warning: Undefined array key "normal" in /var/www/html/sites/all/modules/contrib/flag/includes/flag/flag_flag.inc on line 1214

arning: Trying to access array offset on value of type null in /var/www/html/sites/all/modules/contrib/flag/includes/flag/flag_flag.inc on line 203

Steps to reproduce Proposed resolution Remaining tasks User interface changes API changes Data model changes