There is an alert of health checks failures for DRTR or the WebPulse servers, content filtering, application classification updates etc.
The proxy is an SG-VA running 6.7.5.12.
Based on the packet capture, the issue is because the ABRCA root certificate had expired even though it is already running version 6.7.5.12.
A restart had been done but issue still persist.
The following commands had resolved the issue.
#licensing request-key
The credentials should be the login used to access the support portal for the appliance.
#(config)ssl
#(config ssl)clear-certificate-cache
#(config ssl)intermediate-cert-cache
#(config ssl icc)clear-cache