Error handling does not bring error message

[crackytsi]

What are the steps to reproduce?

• Create a node from as swagger file
• Return from the endpoint a 403 error with a JSON Response

What happens?

• A debug entry is generated, but with empty string, no json response at all.
  
• The node shows an error:
  

What do you expect to happen?

• Show error output in debug-log and on node status

Please tell us about your environment:

• Node generator version: 0.1.0
• Node.js version: 18.2
• Node-RED version: 1.3.5
• Browser: Chrome