Tobey After installing a plugin and activat it a error comes Error booting Flarum: Class Flarum\Core\Notification\NotificationSyncer does not exist How i can repair this?
datitisev Tobey What plugin did you install ? It's most likely a plugin that has not been updated to work with your Flarum version.
Ralkage Tobey I assume you used composer to install said extension, so if you have SSH access, please run the following command in the root of your Flarum install (NOT the public folder) and post the output here using markdown. Command php flarum info