Issue
When you try to publish a dashboard or open a published dashboard, one of the following errors might occur:TableauException: HTTP 503: ERROR: The requested URL could not be retrieved
or:
TableauException: HTTP 503: A communication error occurred: "Operation timed out"
or:
TableauException: HTTP 400: Request Error (invalid_request)
or:
TableauException: HTTP 404: Object not found!
or:
Tableau Exception: HTTP 403 Error: The requested URL could not be retrieved