chore: Refactor joining methods list in _set_parameter_or_attribute f…

…unction.

src/backend/base/langflow/custom/custom_component/component.py

@@ -370,11 +370,10 @@ def _add_edge(self, component, key, output, _input):
 
     def _set_parameter_or_attribute(self, key, value):
         if isinstance(value, Component):
-            methods = [f"'{output.method}'" for output in value.outputs]
+            methods = ", ".join([f"'{output.method}'" for output in value.outputs])
             raise ValueError(
                 f"You set {value.display_name} as value for `{key}`. "
-                "You should pass one of the following: "
-                f"{', '.join(methods)}"
+                f"You should pass one of the following: {methods}"
             )
         self._set_input_value(key, value)
         self._parameters[key] = value