Cannot log into Plesk: PHP Fatal error: Composer detected issues in your platform: Your Composer dependencies require a PHP version “>= 7.4.0” – Plesk

Symptoms

• Cannot log into Plesk with the following error:

  Composer detected issues in your platform: Your Composer dependencies require a PHP version ">= 7.4.0".

• The following error is being output to the panel.log:

  PHP Fatal error: Composer detected issues in your platform: Your Composer dependencies require a PHP version ">= 7.4.0". You are running 7.3.20. in /usr/local/psa/admin/plib/modules/catalog/vendor/composer/platform_check.php

• Old Plesk version (e.g. 18.0.34) is in use.

Cause

Catalog extension bug EXTCATALOG-673

Resolution

The fix will be delivered automatically. To install it immediately, run the Plesk daily maintenance task:

# plesk daily