Firefox/Windows - Clicking 'Cancel' errors and never returns a value to the browser

[FreeTrade]

Error is

Uncaught (in promise) Error: nos2x: undefined

Seems to be on line 52

let error = new Error('nos2x: ' + message.data.response.error.message)

message.data.response.error exist, but does not have a .message property.

[fiatjaf]

Sorry. We need a new extension for Firefox, see https://github.com/fiatjaf/nos2x/issues/18#issuecomment-1367640331

If you can help with that it will be great.