Add try catch for method update_wg_usage to show propper error cause

[devlifeX]

I faced error in refreshing usage and find out there is not interface hiddifywg running.
This command raised error and not working:
wg_raw_output = subprocess.check_output(['wg', 'show', 'hiddifywg', 'transfer'])
after change port number wireguard in admin panel and apply changes it's worked.

[hiddify-com]

We know it but we want to have error in case of issue so we can find if an error occured

[heinnge]

I faced error in refreshing usage and find out there is not interface hiddifywg running. This command raised error and not working: wg_raw_output = subprocess.check_output(['wg', 'show', 'hiddifywg', 'transfer']) after change port number wireguard in admin panel and apply changes it's worked.

hello. which port number did you change to? is the wg interface does not register properly because of port conflicts?