We were dealing with a problem during installation MediaWiki Language Extension Bundle in step upadte database with by web browser
[f18f0cca] /mediawiki/mw-config/ Exception from line 341 of /home/.../domains/.../public_html/mediawiki/includes/MagicWord.php: Error: invalid magic word 'babel' Backtrace: #0 /home/.../domains/.../public_html/mediawiki/includes/MagicWord.php(264): MagicWord->load(string) #1 /home/.../domains/.../public_html/mediawiki/includes/parser/Parser.php(5159): MagicWord::get(string) #2 /home/.../domains/.../public_html/extensions/Babel/BabelStatic.class.php(22): Parser->setFunctionHook(string, array) #3 [internal function]: BabelStatic::onParserFirstCallInit(Parser) #4 /home/.../domains/.../public_html/mediawiki/includes/Hooks.php(206): call_user_func_array(string, array) #5 /home/.../domains/.../public_html/mediawiki/includes/GlobalFunctions.php(3995): Hooks::run(string, array, NULL) #6 /home/.../domains/.../public_html/mediawiki/includes/parser/Parser.php(279): wfRunHooks(string, array) #7 /home/.../domains/.../public_html/mediawiki/includes/parser/Parser.php(291): Parser->firstCallInit() #8 /home/.../domains/.../public_html/mediawiki/includes/parser/Parser.php(5000): Parser->clearState() #9 /home/.../domains/.../public_html/mediawiki/includes/parser/Parser.php(377): Parser->startParse(Title, ParserOptions, integer, boolean) #10 /home/.../domains/.../public_html/mediawiki/includes/installer/Installer.php(631): Parser->parse(string, Title, ParserOptions, boolean) #11 /home/.../domains/.../public_html/mediawiki/includes/installer/WebInstaller.php(676): Installer->parse(string, boolean) #12 /home/.../domains/.../public_html/mediawiki/includes/installer/WebInstallerPage.php(392): WebInstaller->getInfoBox(string) #13 /home/.../domains/.../public_html/mediawiki/includes/installer/WebInstallerPage.php(380): WebInstallerExistingWiki->showKeyForm() #14 /home/.../domains/.../public_html/mediawiki/includes/installer/WebInstaller.php(280): WebInstallerExistingWiki->execute() #15 /home/.../domains/.../public_html/mediawiki/mw-config/index.php(79): WebInstaller->execute(array) #16 /home/.../domains/.../public_html/mediawiki/mw-config/index.php(38): wfInstallerMain() #17 {main}
in main page show this message:
A database query error has occurred. This may indicate a bug in the software.