<br />
<b>Fatal error</b>:  Uncaught Error: Class 'Wikimedia\Services\ServiceContainer' not found in /app/includes/MediaWikiServices.php:152
Stack trace:
#0 /app/includes/AutoLoader.php(109): require()
#1 [internal function]: AutoLoader::autoload()
#2 /app/includes/Setup.php(534): spl_autoload_call()
#3 /app/includes/WebStart.php(89): require_once('/app/includes/S...')
#4 /app/index.php(44): require('/app/includes/W...')
#5 {main}
  thrown in <b>/app/includes/MediaWikiServices.php</b> on line <b>152</b><br />