Fixing the PHP Error 'Trying to Access Array Offset on Value of Type Bool' That Appears After Installing Kayako Classic

Overview

After installing the Kayako Classic helpdesk on your server, you might encounter the PHP error "Trying to Access Array Offset on the Value of Type Bool". The error is generated when the version of the PHP module on the server is incompatible with Kayako Classic.

Solution

To resolve this issue, use only the version of PHP specified in the Kayako Classic Server Configuration and System Requirements article (Requirements section).