fixed solution

app/main.py

@@ -16,6 +16,8 @@ def __get__(self, instance: object, owner: object) -> int:
         return getattr(instance, self.protected_name)
 
     def __set__(self, instance: object, value: int) -> None:
+        if not isinstance(value, int):
+            raise TypeError(f"{self.protected_name} must be an integer")
         if not self.min_amount <= value <= self.max_amount:
             raise ValueError(f"{value} must be in range:"       # noqa
                              f" {self.min_amount} - {self.max_amount}")
@@ -64,6 +66,6 @@ def __init__(self, name: str, limitation_class: type) -> None:
     def can_access(self, visitor: Visitor) -> bool:
         try:
             self.limitation_class(visitor.age, visitor.weight, visitor.height)
-        except ValueError:
+        except (ValueError, TypeError):
             return False
         return True