Getting error message ews0422e - communication error;

Document ID : KB000102971
Last Modified Date : 25/06/2018
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Why does Tomcat (WSTOMSTC) fail to start with the following error:
EWS0422E Communication Error, CciWebsapi internal code : "-2000" "getConnection() Error"
EWS0422E PRC="8" SRC="6" DRC="301989888"
EWS0422E Jobname="WSEWSSTC" ServerId=" "
EWS0422E CCIMES=" No receiver online"
EWS0101I Severe error occured during STC Spawn processing
Check the spawned task (WSEWSSTC) for possible Endevor errors. Resolve those errors and start Tomcat (WSTOMSTC) again.Ā