Fatal error: Uncaught GuzzleHttp\Exception\ClientException: Client error: `POST https://fcm.googleapis.com/v1/projects/dein-projekt-id/messages:send` resulted in a `403 Forbidden` response: { "error": { "code": 403, "message": "Firebase Cloud Messaging API has not been used in project dein-projekt-i (truncated...) in /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php:111 Stack trace: #0 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/guzzle/src/Middleware.php(72): GuzzleHttp\Exception\RequestException::create(Object(GuzzleHttp\Psr7\Request), Object(GuzzleHttp\Psr7\Response), NULL, Array, NULL) #1 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/promises/src/Promise.php(209): GuzzleHttp\Middleware::GuzzleHttp\{closure}(Object(GuzzleHttp\Psr7\Response)) #2 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/promises/src/Promise.php(158): GuzzleHttp\Promise\Promise::callHandler(1, Object(GuzzleHttp\Psr7\Response), NULL) #3 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/promises/src/TaskQueue.php(52): GuzzleHttp\Promise\Promise::GuzzleHttp\Promise\{closure}() #4 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/promises/src/Promise.php(251): GuzzleHttp\Promise\TaskQueue->run(true) #5 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/promises/src/Promise.php(227): GuzzleHttp\Promise\Promise->invokeWaitFn() #6 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/promises/src/Promise.php(272): GuzzleHttp\Promise\Promise->waitIfPending() #7 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/promises/src/Promise.php(229): GuzzleHttp\Promise\Promise->invokeWaitList() #8 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/promises/src/Promise.php(69): GuzzleHttp\Promise\Promise->waitIfPending() #9 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/guzzle/src/Client.php(189): GuzzleHttp\Promise\Promise->wait() #10 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/guzzle/src/ClientTrait.php(95): GuzzleHttp\Client->request('POST', 'https://fcm.goo...', Array) #11 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/notify.php(63): GuzzleHttp\Client->post('https://fcm.goo...', Array) #12 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/notify.php(95): send_fcm_v1_message('ya29.c.c0ASRK0G...', 'dein-projekt-id', 'd4WqYWzXT8WS67l...', Array) #13 /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/notify.php(153): send_notify(Object(mysqli), 1, 'test title', 'Body', '/app/todo') #14 /mnt/web201/a2/21/51434621/htdocs/neu/app/api/send_event_push.php(8): include_once('/mnt/web201/a2/...') #15 /mnt/web201/a2/21/51434621/htdocs/neu/index.php(14): include_once('/mnt/web201/a2/...') #16 {main} thrown in /mnt/web201/a2/21/51434621/htdocs/neu/admin/app/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php on line 111