Plesk is not accessible: AdminPanel_View_List_Domains::getAliasInfo(): Argument #2 ($info) must be of type array, null given

Symptoms

• Plesk Obsidian running on a Linux-based operating system

• Plesk is not accessible and an error that is similar to the following is displayed:

  PLESK_ERROR: ERROR: TypeError: AdminPanel_View_List_Domains::getAliasInfo(): Argument #2 ($info) must be of type array, null given, called in /usr/local/psa/admin/plib/AdminPanel/View/List/Domains.php on line 400 (Domaind.php:603)

Cause

The error suggests that there are severe inconsistencies within the currently installed Plesk packages and they are preventing Plesk from loading properly.

Resolution

In order to resolve the package inconsistency issues, you should follow these steps:

1. Log into your server via SSH

2. Update all Plesk packages by running the following command:

# plesk installer update

3. If the issue persists after the above command finishes,, you should repair the entire Plesk installation by executing the following command:

# plesk repair installation

Additional information

How to install Plesk updates?

Plesk Repair Utility: Installation | Plesk Obsidian documentation