Attempting to login to the TIBCO iProcess Administration Consol (ipac) on v11.7.0 (on Linux) on a newly installed node can return:
Http failure response for https://{URL to iPE machine}:8443/API/ipac/authentication: 403 OK
and the $SWDIR/logs/ipac.log can contain the error:
2019-06-26 07:02:13,072 [ERROR] com.tibco.api.startup.StartupServlet getMachineId() - The exception is Cannot run program "swadm": error=2, No such file or directory