The Plesk login page reloads in a loop on CentOS/RHEL-based distributions

Symptoms

• The Plesk login page reloads in a loop.

• Previous Plesk Update has failed.

• The errors in the web-browser Developer's Console is related to the page graphql.

• The following command shows duplicate Plesk packages:

  # plesk sbin pum --check

• The following command shows Plesk files in the /usr/local/psa directory:

  # rpm -qa | grep plesk | while read i; do rpm -V $i; done | grep -v "python"

Cause

Some Plesk packages are duplicated/corrupted:

Resolution

1. Connect to the Plesk server via SSH.

2. Resolve the issue with duplicate Plesk packages using the steps from this KB article.

   Note: Remove those extra packages that have a different version from Plesk. 

3. Then find corrupted Plesk packages:

   3.1. Run the following command to find corrupted files in the /usr/local/psa directory:

   # rpm -qa | grep plesk | while read i; do rpm -V $i; done | grep -v "python"
   ...
   S.5....T. /usr/local/psa/admin/cp/public/javascript/main.js
   S.5....T. /usr/local/psa/admin/cp/public/javascript/main.js.map
   ...

   3.2. Check the Plesk file from the output above to find the corrupted package:

   # rpm -qf /usr/local/psa/admin/cp/public/javascript/main.js
   
   plesk-control-panel-18.0-2.centos.7+p18.0.38.3+t211001.1903.noarch

4. Remove the package:

   # rpm -e --nodeps plesk-control-panel-18.0-2.centos.7+p18.0.38.3+t211001.1903.noarch.rpm

5. Rerun Plesk Update:

   # plesk installer update

6. Repeat steps 3-5 until the command below stops returning files in the /usr/local/psa directory:

   # rpm -qa | grep plesk | while read i; do rpm -V $i; done | grep -v "python"