Hover over the requirements to reveal possible solutions in case they weren't fulfilled.

Requirement Success
PHP 7.1
allow_url_fopen enabled
Client URL Library
Valid Steam API key
PDO MySQL PHP extension
Valid MySQL credentials
Lock file removal privilege

MySQL connection error

PDOException: SQLSTATE[28000] [1045] Access denied for user 'u30254p52750_ember'@'fo-p00-ob.rzone.de' (using password: YES) in /mnt/web014/b3/79/57315179/htdocs/vendor/illuminate/database/Connectors/Connector.php:70 Stack trace: #0 /mnt/web014/b3/79/57315179/htdocs/vendor/illuminate/database/Connectors/Connector.php(70): PDO->__construct('mysql:host=185....', 'u30254p52750_em...', 'c0S6kGuvwZqE', Array) #1 /mnt/web014/b3/79/57315179/htdocs/vendor/illuminate/database/Connectors/Connector.php(46): Illuminate\Database\Connectors\Connector->createPdoConnection('mysql:host=185....', 'u30254p52750_em...', 'c0S6kGuvwZqE', Array) #2 /mnt/web014/b3/79/57315179/htdocs/vendor/illuminate/database/Connectors/MySqlConnector.php(24): Illuminate\Database\Connectors\Connector->createConnection('mysql:host=185....', Array, Array) #3 /mnt/web014/b3/79/57315179/htdocs/vendor/illuminate/database/Connectors/ConnectionFactory.php(182): Illuminate\Database\Connectors\MySqlConnector->connect(Array) #4 [internal function]: Illuminate\Database\Connectors\ConnectionFactory->Illuminate\Database\Connectors\{closure}() #5 /mnt/web014/b3/79/57315179/htdocs/vendor/illuminate/database/Connection.php(918): call_user_func(Object(Closure)) #6 /mnt/web014/b3/79/57315179/htdocs/app/Controllers/MigrationController.php(24): Illuminate\Database\Connection->getPdo() #7 [internal function]: App\Controllers\MigrationController->dependencycheck(Object(Slim\Http\Request), Object(Slim\Http\Response), Array) #8 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/Handlers/Strategies/RequestResponse.php(41): call_user_func(Array, Object(Slim\Http\Request), Object(Slim\Http\Response), Array) #9 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/Route.php(356): Slim\Handlers\Strategies\RequestResponse->__invoke(Array, Object(Slim\Http\Request), Object(Slim\Http\Response), Array) #10 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(117): Slim\Route->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response)) #11 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/Route.php(334): Slim\Route->callMiddlewareStack(Object(Slim\Http\Request), Object(Slim\Http\Response)) #12 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/App.php(516): Slim\Route->run(Object(Slim\Http\Request), Object(Slim\Http\Response)) #13 /mnt/web014/b3/79/57315179/htdocs/vendor/runcmf/runtracy/src/RunTracy/Middlewares/TracyMiddleware.php(59): Slim\App->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response)) #14 [internal function]: RunTracy\Middlewares\TracyMiddleware->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Slim\App)) #15 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/DeferredCallable.php(43): call_user_func_array(Object(RunTracy\Middlewares\TracyMiddleware), Array) #16 [internal function]: Slim\DeferredCallable->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Slim\App)) #17 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(70): call_user_func(Object(Slim\DeferredCallable), Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Slim\App)) #18 /mnt/web014/b3/79/57315179/htdocs/app/Middleware/MigrationMiddleware.php(14): Slim\App->Slim\{closure}(Object(Slim\Http\Request), Object(Slim\Http\Response)) #19 [internal function]: App\Middleware\MigrationMiddleware->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Closure)) #20 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/DeferredCallable.php(43): call_user_func_array(Object(App\Middleware\MigrationMiddleware), Array) #21 [internal function]: Slim\DeferredCallable->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Closure)) #22 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(70): call_user_func(Object(Slim\DeferredCallable), Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Closure)) #23 /mnt/web014/b3/79/57315179/htdocs/app/Middleware/TrailingSlashMiddleware.php(21): Slim\App->Slim\{closure}(Object(Slim\Http\Request), Object(Slim\Http\Response)) #24 [internal function]: App\Middleware\TrailingSlashMiddleware->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Closure)) #25 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/DeferredCallable.php(43): call_user_func_array(Object(App\Middleware\TrailingSlashMiddleware), Array) #26 [internal function]: Slim\DeferredCallable->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Closure)) #27 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(70): call_user_func(Object(Slim\DeferredCallable), Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Closure)) #28 /mnt/web014/b3/79/57315179/htdocs/app/Middleware/LastOnlineMiddleware.php(14): Slim\App->Slim\{closure}(Object(Slim\Http\Request), Object(Slim\Http\Response)) #29 [internal function]: App\Middleware\LastOnlineMiddleware->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Closure)) #30 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/DeferredCallable.php(43): call_user_func_array(Object(App\Middleware\LastOnlineMiddleware), Array) #31 [internal function]: Slim\DeferredCallable->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Closure)) #32 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(70): call_user_func(Object(Slim\DeferredCallable), Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Closure)) #33 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(117): Slim\App->Slim\{closure}(Object(Slim\Http\Request), Object(Slim\Http\Response)) #34 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/App.php(407): Slim\App->callMiddlewareStack(Object(Slim\Http\Request), Object(Slim\Http\Response)) #35 /mnt/web014/b3/79/57315179/htdocs/vendor/slim/slim/Slim/App.php(315): Slim\App->process(Object(Slim\Http\Request), Object(Slim\Http\Response)) #36 /mnt/web014/b3/79/57315179/htdocs/public/index.php(5): Slim\App->run() #37 {main}