Plesk home page shows error: php_admin_value takes two arguments, PHP Value Modifier

Symptoms

• The following error is shown in Plesk > Home page:

  New configuration files for the Apache web server were not created due to the errors in configuration templates: Syntax error on line 61 of /etc/httpd/conf/plesk.conf.d/vhosts/example.com.conf: php_admin_value takes two arguments, PHP Value Modifier

• The PHP directives have empty values for the domain mentioned in the error in Domains > example.com > PHP Settings:
  Click on the screenshot below to expand
  

Cause

The database inconsistency.

Resolution

1. Log into Plesk

2. Go to Domains > example.com > PHP Settings.

3. Press the Reset To Default button in front of any PHP directive that has an empty value:

   Click on the screenshot below to expand
   

4. Scroll down and press the OK button to apply the changes.

5. Log into the server via SSH.

6. Execute the command below to regenerate configuration files for example.com domain:

   # plesk repair web example.com