TypeError covertIniSize Errors
Problem
When accessing support tickets or areas of WHMCS with file attachments, you see the following error:
TypeError: Return value of convertIniSize() must be of the type int Error, float returned in /path/to/whmcs/includes/functions.php
Cause
The PHP configuration that WHMCS uses contains an invalid post_max_size value.
You may be able to review the current value within WHMCS at Utilities > System > PHP Info.
Solution
This troubleshooting information only applies to self-hosted WHMCS installations.
Edit the applicable php.ini file on your server to specify a valid post_max_size value.
- For more information, see PHP’s configuration documentation.
- For help, contact your hosting provider or system administrator.
Last modified: 2025 November 27