Original Submission The following stacktrace is generated when SYSTEM_CHECK try to clean up FRS:
PHP Warning: preg_match() expects parameter 2 to be string, array given in /usr/share/tuleap/src/common/dao/include/DataAccess.class.php on line 279
PHP Stack trace:
PHP 1. {main}() /usr/share/tuleap/src/www/empty.php:0
PHP 2. BackendSystem->cleanupFRS() /usr/share/tuleap/src/www/empty.php:6
PHP 3. EventManager->processEvent() /usr/share/tuleap/src/common/backend/BackendSystem.class.php:445
PHP 4. EventManager->processEventOnListener() /usr/share/tuleap/src/common/event/EventManager.class.php:77
PHP 5. PluginProxy->processEvent() /usr/share/tuleap/src/common/event/EventManager.class.php:91
PHP 6. phpwikiPlugin->purgeFiles() /usr/share/tuleap/src/common/plugin/PluginProxy.php:57
PHP 7. PHPWikiAttachment->purgeAttachments() /usr/share/tuleap/plugins/phpwiki/include/phpwikiPlugin.class.php:172
PHP 8. PHPWikiAttachmentDao->searchAttachmentToPurge() /usr/share/tuleap/plugins/phpwiki/include/lib/PHPWikiAttachment.class.php:613
PHP 9. DataAccess->escapeInt() /usr/share/tuleap/plugins/phpwiki/include/lib/PHPWikiAttachmentDao.class.php:152
PHP 10. preg_match() /usr/share/tuleap/src/common/dao/include/DataAccess.class.php:279