-fix a typo

app.py

@@ -106,11 +106,13 @@ class SpaceBuilder:
             if not np.all(
                 interface_input_types == first_input_types
             ):  # Vectorize the comparison and don't use double for loop
+                cls.error_message = "Given spaces's input types are different"
                 return False
             interface_output_types = [
                 type(output) for output in interface.output_components
             ]
             if not np.all(interface_output_types == first_output_types):
+                cls.error_message = "Given spaces's input types are different"
                 return False
 
         return True
@@ -137,7 +139,7 @@ class SpaceBuilder:
             cls.error_message = "The the username/space_name is already used for the given token's user"
             return False
         else:
-            return False
+            return True
 
     @staticmethod
     def build_space(space_names: str, hf_token: str, target_space_name: str, space_description: str) -> str: