It seems issue happend at Minemeld side.
This is error from Qradar Threat Intell app "There is a problem connecting to the TAXII server. Verify that the TAXII server is available. Get list of collections failed."
This is error from Minemeld (/opt/minemeld/log/minemeld-web.log)
"POST /taxii-discovery-service HTTP/1.0" 200 1658 "-" "Qradar TI App/220.127.116.1170824002606"
Note: MM is run over HTTP.
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