integration logs

I have created a integration to a internal webservice a get call to return list of countries.

The integration was working yesterday morning but no longer working, this is in qa. I can call the webservice via browser on the appian box, however it no longer works when I try to get the data via  the test request in the integration.

 How do I see what is going on appian end, ie what logs can I view to get more information about this error.  JBoss logs doesn’t say much, only that connection is

ConnectorRuntimeException [title=Something went wrong, Failed to connect to https://xxxxx/reference/v1/country

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