On some requests, uimapi works, then fails, then works, then fails again when using the same REST call/request. The failures show-> Error 500 - The session was closed by the remote host. This happens for some servers and probes but not all.
Same results when the URL is provided to a browser, like this one:
Also, same results when using the UIM REST API:
Release : 9.1.0
Component : uimapi
UIM v9.02 or higher