when I go to course manager. this warning appears: plugins/editors/tinymce/src/PluginTraits/XTDButtons.php on line 61
plugins/editors/tinymce/src/PluginTraits/XTDButtons.php on line 61
ctokepa Hi
It looks like you're using a new PHP version and that warning is from the editor plugin, not in Guru component. This kind of warning will not affect functions on your site, you can hide it by going to global configuration in backend and turn off Error Reporting in Server tab there.
Regards