If you want to reinstall PicsEngine, please remove the admin/conf/install.lock file.
Declaration of AppJavascript::notice() should be compatible with that of SystemJavascript::notice()
Line: 4
File: /var/www/vhosts/originalgallery.fr/httpdocs/picsengine/admin/library/app/App.Javascript.php
If you don't know what the problem is, please check our support page.