SuiteCRM 7.12.7

After upgrading to v7.12.7 I am now getting an popup error “Exception occurred Internal Server Error” followed by error log file suitecrm_02_03_23.log containing the following errors:
Fri Feb 3 20:18:47 2023 [29556][1][FATAL] Email address save error
Fri Feb 3 20:18:55 2023 [29556][1][FATAL] log call at: modules/EmailMan/tpls/config.tpl:465 - styleChecked is not set
Fri Feb 3 20:34:42 2023 [11008][1][FATAL] log call at: modules/EmailMan/tpls/config.tpl:465 - styleChecked is not set

Has anyone come across these errors and have a working solution?
Thanks in advance