undefined index ‘group’ error

Hello,

Not sure if this plugin is still being maintained or not, seeing as the last update was 5 years ago.

I’m getting this error with the plugin now:
Undefined index: group in [redacted]/httpd.www/wp-content/plugins/wp-less/lib/Garbagecollector.class.php on line 91

It’s clogging up my debug file.