Fix Server model to use correct relationship when returning subusers, closes pterodactyl#1589

Author: DaneEveritt

CHANGELOG.md

@@ -13,6 +13,7 @@ value when showing an error state.
 * Database host management will now properly display an error message to the user when there is any type of MySQL related
 error encountered during creation or update.
 * Two-factor tokens generated when a company name has a space in it will now properly be parsed on iOS authenticator devices.
+* Fixed 500 error when trying to request subuser's from a server in the application API.
 
 ### Added
 * Server listing view now displays the total used disk space for each server.

app/Models/Server.php

@@ -156,11 +156,11 @@ public function user()
     /**
      * Gets the subusers associated with a server.
      *
-     * @return \Illuminate\Database\Eloquent\Relations\HasMany
+     * @return \Illuminate\Database\Eloquent\Relations\HasManyThrough
      */
     public function subusers()
     {
-        return $this->hasMany(Subuser::class);
+        return $this->hasManyThrough(User::class, Subuser::class, 'server_id', 'id', 'id', 'user_id');
     }
 
     /**