Throw exception if there are no personal access clients

Author: gauravmak

src/ClientRepository.php

@@ -2,6 +2,8 @@
 
 namespace Laravel\Passport;
 
+use RuntimeException;
+
 class ClientRepository
 {
     /**
@@ -77,6 +79,7 @@ public function activeForUser($userId)
      * Get the personal access token client for the application.
      *
      * @return \Laravel\Passport\Client
+     * @throws RuntimeException
      */
     public function personalAccessClient()
     {
@@ -86,6 +89,10 @@ public function personalAccessClient()
 
         $client = Passport::personalAccessClient();
 
+        if (! $client->exists()) {
+            throw new RuntimeException('Personal access client not found. Please create one first.');
+        }
+
         return $client->orderBy($client->getKeyName(), 'desc')->first()->client;
     }