Fix: timestamp

src/result.py

@@ -17,7 +17,9 @@ class Result:
     def from_dict(cls, data: dict) -> "Result":
         return cls(
             submission_name=data["submission_name"],
-            submission_time=datetime.fromisoformat(data["submission_time"]),
+            submission_time=datetime.fromisoformat(
+                data["submission_time"].replace("Z", "+00:00")
+            ),
             submission_score=data["submission_score"],
             submission_id=data["submission_id"],
             user_id=data["user_id"],