Fatal error: Uncaught Error: Interface 'Composer\Plugin\PluginInterface' not found in /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/apiki/vendor/composer/installers/src/Composer/Installers/Plugin.php on line 9

Error: Interface 'Composer\Plugin\PluginInterface' not found in /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/apiki/vendor/composer/installers/src/Composer/Installers/Plugin.php on line 9

Call Stack:
    0.0004     365488   1. {main}() /srv/drbd-web/home/chelix/public_html/wp-content/plugins/all-in-one-event-calendar/apiki/vendor/composer/installers/src/Composer/Installers/Plugin.php:0