Fatal Error

You must have php version older than 5 where json_last_error() doesn’t exist.

Hi,

php version at 5.5 , so that is not the issue. Any other possibilities?

Just installed on a client site and same issue.
PHP 5.2.17

I will try to do a workaround and release an update for it!

json_last_error has been added in PHP 5.3.0 https://www.php.net/manual/en/function.json-last-error.php

Update to latest version!

Plugin requires minimum PHP 5.2.0!