Solution

app/main.py

@@ -54,7 +54,7 @@ def __init__(
             weight: int,
             max_load_weight: int,
             current_load: int,
-            coords: list[int] = None) -> None:
+            coords: list[str] = None) -> None:
         super().__init__(name, weight, coords)
         self.max_load_weight = max_load_weight
         self.current_load = current_load