After upgrading, a custom browser keystore <certname>.jks was not migrated.
Browser certificate previously imported into <custom keystore name>.jks
If, when a browser certificate is made and imported into a keystore named anything other than .keystore, the new keystore will not be migrated, as only .keystore is migrated.
Solution 1:
Manually move your custom browser keystore and restart services.
Solution 2(recommended):
Documented instructions to keep .keystore file named as .keystore.
Generating a unique browser certificate
"
The -keystore parameter specifies the name and location of the keystore file which must be
.keystore located in this directory. This is specified by using
-keystore .keystore"