Keep data folder assert

my_submission/aicrowd_wrapper.py

@@ -22,6 +22,7 @@ class AIcrowdWrapper:
         self.dataset_dir = os.getenv("AICROWD_DATASET_DIR", './dataset')
 
         assert os.path.exists(self.predictions_dir), f'{self.predictions_dir} - No such directory'
+        assert os.path.exists(self.dataset_dir), f'{self.dataset_dir} - No such directory'
 
     def raise_aicrowd_error(self, msg):
         """ Will be used by the evaluator to provide logs """