fixed deadline date for mastertask

be/database/factories/MasterTaskFactory.php

@@ -36,7 +36,7 @@ class MasterTaskFactory extends Factory
             'description' => fake()->paragraphs(3, true),
             'estimated_time' => fake()->numberBetween(20,100),
             'tracked_time' => fake()->numberBetween(4,20),
-            'deadline' => fake()->date(),
+            'deadline' => fake()->dateTimeBetween('now', '+3 weeks'),
             'is_finished' => 0,
         ];
     }