After disabling the Babel extension, I got an "Upgrade an existing installation" error:
<style>.bpe a:link, .bpe a:visited, .bpe a:active { color: #0b4c8e; text-decoration: none; } .bpe a:hover { color: #0D7CEC; }</style>
Warning: require_once(/users/suriyaakudo/www/wiki/extensions/v1.25/ArticleFeedbackv5/maintenance/../../../maintenance/Maintenance.php) [<a href='http://de.php.net/function.require-once'>function.require-once</a>]: failed to open stream: No such file or directory in /users/suriyaakudo/www/wiki/extensions/v1.25/ArticleFeedbackv5/maintenance/setArchiveDate.php on line 12
<style>.bpe a:link, .bpe a:visited, .bpe a:active { color: #0b4c8e; text-decoration: none; } .bpe a:hover { color: #0D7CEC; }</style>
Fatal error: require_once() [<a href='http://de.php.net/function.require'>function.require</a>]: Failed opening required '/users/suriyaakudo/www/wiki/extensions/v1.25/ArticleFeedbackv5/maintenance/../../../maintenance/Maintenance.php' (include_path='.') in /users/suriyaakudo/www/wiki/extensions/v1.25/ArticleFeedbackv5/maintenance/setArchiveDate.php on line 12
(Link to MyWiki: http://suriyaakudo.bplaced.net/wiki/mw-config/?page=Upgrade)