Cannot install CI4 on 2 different cpanel shared hosting servers and configs with PHP7

According to https://bcit-ci.github.io/CodeIgniter4/g...ments.html that says

   This server variable can be set in your .htaccess file, or Apache config using SetEnv.

I have now commented out

Code:

SetEnv CI_ENV development

in .htaccess file and have defined the constant in my public/index.php file:

PHP Code:

define('ENVIRONMENT', 'development'); 


But I see the following error:

Code:

Fatal error: Default value for parameters with a class type hint can only be NULL in /home/XXX/system/Common.php on line 139

I think it shouldn't happen, should it?