Hello

I am getting the following error when I try to launch the installation script.

Fatal error: Uncaught Error: Call to undefined function json_decode() in /home1/MYDOMAIN.com/Classifieds/install/index.php:118 Stack trace: #0 {main} thrown in /home1/DIRNAME/MYDOMAIN.com/Classifieds/install/index.php on line 118

I got this error after I exist the installation to upgrade my php version from 5.4 to 7.2. Can anyone help me with this error? Thanks.