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Full Version: I am testing CodeIgniter 4, but I am getting this error:
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Fatal error: Default value for parameters with a class type hint can only be NULL in C:\xampp\htdocs\CodeIgniter4-develop\system\Config\DotEnv.php on line 121
What am I missing?
Are you using the current version of CI4? It shows line 121 as a comment.
Have you made any changes inside the system folder?
Hard to tell what is going on without more info.
Off the top of my head, without any additional information, it sounds like either:

1) Your not on the required version of PHP (7.2)
2) you've pulled down the master branch instead of the develop branch?
Line 121 is the end of a comment in both the master & develop branches.
This sounds more like a PHP version mismatch, but I thought that index.php caught that.
Could there be a php.ini setting that would impact this?