@yingshuang I’m thinking the certificate you are seeing is from your load balancer or somewhere else. The default self-signed certificate Morpheus generates looks like this:
Either the certificate is not coming from the Morpheus node or, if it is, then that might be what the certificate was configured with. If that is what the certificate is configured with, it looks to be missing the CN as a DNS name and probably also the SANs as well. The date on the certificate says it was generated 2 days ago, so the SSL cert is probably working correctly just the certificate itself has not been configured properly would be my thoughts.
If you continue to have issue, I’d recommend opening a support case. It will allow for easier troubleshooting.