Last modified: 2014-11-17 09:21:28 UTC
From Hooks.php // Run autoloader (workaround for call_user_func_array bug) // and throw error if not callable. if ( !is_callable( $callback ) ) { throw new MWException( 'Invalid callback in hooks for ' . $event . "\n" ); } e.g. <!DOCTYPE html> <html><head><title>Internal error - {{SITENAME}}</title><style>body { font-family: sans-serif; margin: 0; padding: 0.5em 2em; }</style></head><body> <p>[8248938e] /mw-config/index.php?page=Install Exception from line 182 of /var/www/wikifarm0/core/includes/Hooks.php: Invalid callback in hooks for LoadExtensionSchemaUpdates<br /> </p><p>Backtrace:</p><p>#0 /var/www/wikifarm0/core/includes/GlobalFunctions.php(4011): Hooks::run(string, array, NULL)<br /> #1 /var/www/wikifarm0/core/includes/installer/DatabaseUpdater.php(116): wfRunHooks(string, array)<br /> #2 /var/www/wikifarm0/core/includes/installer/DatabaseUpdater.php(169): DatabaseUpdater->__construct(DatabaseMysqli, boolean, NULL)<br /> #3 /var/www/wikifarm0/core/includes/installer/DatabaseInstaller.php(214): DatabaseUpdater::newForDB(DatabaseMysqli)<br /> #4 [internal function]: DatabaseInstaller->createExtensionTables(MysqlInstaller)<br /> #5 /var/www/wikifarm0/core/includes/installer/Installer.php(1534): call_user_func(array, MysqlInstaller)<br /> #6 /var/www/wikifarm0/core/includes/installer/WebInstallerPage.php(1238): Installer->performInstallation(array, array)<br /> #7 /var/www/wikifarm0/core/includes/installer/WebInstaller.php(275): WebInstaller_Install->execute()<br /> #8 /var/www/wikifarm0/core/mw-config/index.php(61): WebInstaller->execute(array)<br /> #9 /var/www/wikifarm0/core/mw-config/index.php(29): wfInstallerMain()<br /> #10 {main}</p> </body></html> The error message doesn't help identify what is the problem. If you've got loads of extensions, it can be hard to find errors like this. Dumping $callback may yield a bit more useful information...
