Symptoms

Unable to access Domains menu. The following error is shown:

Call to undefined method Plesk\Session\Context::getUser

Cause

plesk-core package is corrupted.

Resolution

Reinstall plesk-core and apply all the microupdates:

# wget http://autoinstall.plesk.com/PSA_17.0.17/dist-deb-Ubuntu-16.04-x86_64/base/plesk-core_17.0.17-ubuntu16.04.build1700161028.14_amd64.deb

# dpkg -i plesk-core_17.0.17-ubuntu16.04.build1700161028.14_amd64.deb

# plesk installer --select-product-id plesk --select-release-current --reinstall-patch --install-component panel

Note: The example above is for Ubuntu 16.04. Please check for the latest version of package on https://autoinstall.plesk.com