SOAPUI considers Redirect URI invalid

Hi SoapUI Community

I am facing an issue while trying to setup API tests for the REST APIs which use OAUTH2.0 via the Cognito using the Implicit Grant Authentication type. The redirect URI i am using is something like abc:// which is being considered by SOAPUI as invalid  but same redirect URI works in Postman and I able to pass it for the request. Can you please help me in suggesting a workaround for this issue? I have already tried to disabled encoding in the settings as well as passing the redirect URI in encoded format such as abc%3F%2F%2F instead of abc:// but then its being encoded twice and not usable.