add prune StatisticFixtures

app/Models/Event.php

@@ -2,7 +2,6 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Prunable;
 use Illuminate\Support\Facades\Auth;
@@ -36,9 +35,9 @@ class Event extends Model
     /**
      * Get the prunable model query.
      */
-    public function prunable(): Builder
+    public function prunable()
     {
-        return static::where('starttime', '<', now()->subHour(5));
+        return static::where('starttime', '<', now()->subHours(5));
     }
 
     public function provider()