Troubleshooting Tip: GUI keeps loading after upgrading to v7.4.5

After upgrading to v7.4.5, the GUI may experience a slowdown in the following tabs:

1. Network.
2. LDAP setting.
3. Forward logs.
4. FortiGuard setting.
5. Local logs.
6. Fabric management.

To resolve the issue, go to System -> Settings -> System Time -> Time zone, check if zoneinfo/*/*  is mentioned, and replace it.

From CLI :

config system global
    set timezone <integer>
end

To check which timezone corresponds to each integer value, after entering the 'set timezone' command in the CLI, press ?. This will display a full list of available timezones along with their assigned integer values.

Example:

If (GMT-12:00) zoneinfo/Etc/GMT+12 is mentioned, change it to (GMT-12:00) Etc/GMT+12.

Do not use 'zoneinfo' in 'timezone'.