Update file util.py

util.py

@@ -5,13 +5,13 @@ import json
 class ConfigParser:
     def __init__(self, path: str):
         with open(path, 'r') as f:
-            json_obj = json.load(f)
+            json_str = f.read()
         
-        config = json.loads(json_obj, object_hook=lambda x: SimpleNamespace(**x))
+        config = json.loads(json_str, object_hook=lambda x: SimpleNamespace(**x))
 
         self.path = path
         self.config = config
-        self.json_obj = json_obj
+        self.json_str = json_str