This error means that Plesk database was not upgraded correctly. For fixing the error perform post upgrade configuration by executing bootstrapper script.
Bootstrapper script can be found at the directory $PRODUCT_ROOT_DIbootstrapper/.
# /usr/local/psa/bootstrapper/pp10.9.0-bootstrapper/bootstrapper.sh repair
**** Product repair completed successfully.
After repairing configuration you should be able to access to Control Panel.