CI in apache userdirs (domain.com/~user/public/ci)

Can you add this DEBUG script to index.php immediately before $app->run(); and show what is displayed.

file: index.php

Code:

# DEBUG =======================================================G
   if(1) :
     echo '<br>index.php ==> ' .__file__;
     echo '<br>FCPATH    ==> ' .FCPATH;
     echo '<pre>$paths   ==> '; print_r($paths);
     die;
   endif;
# DEBUG =======================================================G
$app->run();

Also can you confirm that the CI4 Splash screen is loading.