we have developed 2 web services to integrate with external system - one web service will connect with other application using Id password we provided and get a token as reply.

second web service will provide a service request id and other details and will get success msg as response.

we have an before update trigger which will invoke when we update the status of service request as closed. That trigger will invoke web services.

but , it is ending by throwing above error. trigger code in oracle cx service cloud :