The error is most probably related to cross-origin requests from the viewer(client) to the service.
Please compare your settings with the details provided in this forum thread
. In addition to the settings for the service, enable CORS
. The next troubleshooting step in such cases is to use the browser's console or Fiddler and check the failed requests.
Iif you need any further help, let us know the failed request respond from Fiddler- Inspeactors - Response - Raw tab
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