Bug: Error Occurs When Cancelling File Save Dialog in Yaak Response

Description: When saving a response result in Yaak, after the file directory selection dialog pops up, clicking "Cancel" causes an error notification to appear in the bottom-right corner.

Steps to Reproduce:

1. Perform a request in Yaak

2. Attempt to save the response result

3. When the file directory selection dialog appears, click "Cancel"

4. Observe the error notification in the bottom-right corner

Expected Behavior: Clicking "Cancel" should simply close the dialog without any error notifications.

Actual Behavior: An error notification appears in the bottom-right corner after clicking "Cancel".

Additional Context: This seems to be a UI handling issue where the cancel action is not properly managed in the file saving workflow.