Webadmin Stopped working after Plesk panel upgrade

[MolenoM]

After Plesk panel upgrade to 12.x webadmin stopped working . It's showing following error

Server Error in '/' Application.
The resource cannot be found.
Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable.  Please review the following URL and make sure that it is spelled correctly.

 

[IgorG]

Try to switch it to 'none' and then back to 'webadmin' in Plesk interface.

 

[24x7serversupports]

check and confirm if my little admin or any other application is installed under server components. If it is there then try removing and readding it.