Hi , I'm Vietnamese , my English isnt well so ...sorry for that. I had an error AFTER INSTALLING FLARUM
Warning: count(): Parameter must be an array or an object that implements Countable in C:\xampp1\htdocs\Flarum\vendor\flarum\core\src\Core\Post\RegisteredTypesScope.php on line 52
Fatal error: Uncaught RuntimeException: Output has been emitted previously; cannot emit response in C:\xampp1\htdocs\Flarum\vendor\zendframework\zend-diactoros\src\Response\SapiEmitterTrait.php:41 Stack trace: #0 C:\xampp1\htdocs\Flarum\vendor\zendframework\zend-diactoros\src\Response\SapiEmitter.php(30): Zend\Diactoros\Response\SapiEmitter->assertNoPreviousOutput() #1 C:\xampp1\htdocs\Flarum\vendor\zendframework\zend-diactoros\src\Server.php(167): Zend\Diactoros\Response\SapiEmitter->emit(Object(Zend\Diactoros\Response)) #2 C:\xampp1\htdocs\Flarum\vendor\flarum\core\src\Http\AbstractServer.php(36): Zend\Diactoros\Server->listen(Object(Zend\Stratigility\NoopFinalHandler)) #3 C:\xampp1\htdocs\Flarum\index.php(16): Flarum\Http\AbstractServer->listen() #4 {main} thrown in C:\xampp1\htdocs\Flarum\vendor\zendframework\zend-diactoros\src\Response\SapiEmitterTrait.php on line 41
Could u guys give me a solution, thanks
