"cme service test" fails on the API command:

Failed discard old sessions (5/5):
Error Code: Management API error

API call: show-sessions failed with an exception: 'to'.

In api.elg the request looks like this:

Address: http://127.0.0.1:50276/web_api/discard
Encoding: ISO-8859-1
Http-Method: POST
Content-Type: application/json
....
Payload: {"uid":""}

If the session is open in the database, the response in api.elg looks like this:

Response-Code: 200
...
Payload: number-of-discarded-changes: 0
message: "OK"

ERROR com.checkpoint.management.web_api.utils.WebApiCommandExceptionUtils.getErrorReply:94 [qtp-1297410348-33] - 
Server has thrown GeneralRemoteFault exception errorCode [The required session is no longer available. 
Please verify if private session was published or discarded.] errorFamily [null] message [An internal error has occurred.]

...

Response-Code: 400
Content-Type: text/plain
Headers: {Content-Type=[text/plain], Date=[Wed, 21 Apr 2021 15:02:41 GMT]}
Payload: code: "generic_server_error"
message: "Management server failed to execute command"