- Plesk 11.x for Windows
Upgrading of Parallels Plesk Panel to version 11.5 failed. The following error is shown when enter login and password at
500 Internal server error
PHP Warning: include_once(SB\\Application\\Api.php): failed to open stream: No such file or directory
is path to Plesk installation directory (e.g.,
C:\\Program Files (x86)\\Parallels\\Plesk
Missing files after failed upgrade.
There is no required
You can receive missing files from msi package from the autoinstaller repository and place it to required directory.
Use details from KB How to restore files from the plesk.msi package to get instructions for extracting files from msi package.
Alternatively you may copy missing files from the other server with the same OS and Plesk version.