migrating to CI4

It's not trying to access pear. It's trying to include an empty filename: 

Code:

Failed opening required ''

Then it's telling you what your include_path is, and it happens to include the pear directory, it has nothing to do with CI:

Code:

(include_path='.:/opt/php_interim_dir/ea-php74/root/usr/share/pear')

...and this error comes from line 32 in index.php:

Code:

in /home/user/public_html/index.php on line 32

What is at line 32? In CI 4.04 we have this:

PHP Code:

require $pathsPath; 


...which is defined at line 16:

PHP Code:

// Location of the Paths config file.
// This is the line that might need to be changed, depending on your folder structure.
$pathsPath = realpath(FCPATH . '../app/Config/Paths.php');
// ^^^ Change this if you move your application folder 


Did you change this line? You have something misconfigured and that's why you have this error.