You will have to make sure, you are using at least PHP version 7.1.3
We recommend to use PHP 7.2
To know your PHP version and configurations, you can do this-
Create a plain-text file named
phpinfo.php and place it in your Web root / public_html. This file contains just this line-
Open this file in a Web browser by pointing your browser to
Your PHP version is at the top, and the rest of the page contains other system information. When you are finished reviewing your information you must delete phpinfo.php because it is a security risk to expose such sensitive data.