Go to Special:ApiSandbox
Select main; choose action=query (combo box)
Select action=query; error message is
An error occurred while loading information for API module "query": [04c7e634f5468f8018776acc] Exception caught: syntax error, unexpected '$user' (T_VARIABLE), expecting ']'
api.php has the following additional info:
ParseError at /var/www/live/w/extensions/MultiLookup/ApiQueryMultiLookup.php(50) #0 [internal function]: AutoLoader::autoload(string) #1 [internal function]: spl_autoload_call(string) #2 /var/www/live/w/includes/api/ApiPageSet.php(1509): is_subclass_of(string, string) #3 /var/www/live/w/includes/api/ApiPageSet.php(1468): ApiPageSet->getGenerators() #4 /var/www/live/w/includes/api/ApiBase.php(2348): ApiPageSet->getAllowedParams(integer) #5 /var/www/live/w/includes/api/ApiQuery.php(499): ApiBase->getFinalParams(integer) #6 /var/www/live/w/includes/api/ApiBase.php(2348): ApiQuery->getAllowedParams(integer) #7 /var/www/live/w/includes/api/ApiHelp.php(433): ApiBase->getFinalParams(integer) #8 /var/www/live/w/includes/api/ApiHelp.php(165): ApiHelp::getHelpInternal(DerivativeContext, array, array, array) #9 /var/www/live/w/includes/api/ApiHelp.php(52): ApiHelp::getHelp(DerivativeContext, array, array) #10 /var/www/live/w/includes/api/ApiMain.php(1598): ApiHelp->execute() #11 /var/www/live/w/includes/api/ApiMain.php(537): ApiMain->executeAction() #12 /var/www/live/w/includes/api/ApiMain.php(508): ApiMain->executeActionWithErrorHandling() #13 /var/www/live/w/api.php(87): ApiMain->execute() #14 {main}
I tried random other API modules (not all of them) and found no errors in them. It appears to be just "query."