Fatal error: Uncaught Exception: Unable to open file /usr/share/mediawiki/extensions/GoogleDocs4MW/extension.json: filemtime(): stat failed for /usr/share/mediawiki/extensions/GoogleDocs4MW/extension.json in /usr/share/mediawiki/includes/registration/ExtensionRegistry.php:199
Stack trace:
#0 /usr/share/mediawiki/includes/GlobalFunctions.php(49): ExtensionRegistry->queue()
#1 /etc/mediawiki/LocalSettings.php(250): wfLoadExtension()
#2 /usr/share/mediawiki/includes/Setup.php(218): require_once('...')
#3 /usr/share/mediawiki/includes/WebStart.php(86): require_once('...')
#4 /usr/share/mediawiki/index.php(44): require('...')
#5 {main}
thrown in /usr/share/mediawiki/includes/registration/ExtensionRegistry.php on line 199