How to fix You can also run `php --ini` inside terminal to see which files are used by PH P in CLI mode

 You have any problem with this since install laravel with composer install, let's see

  Problem 1
    - intervention/image 2.4.0 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.3.9 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.3.8 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.3.7 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.3.6 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.3.5 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.3.4 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.3.3 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.3.2 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.3.14 requires ext-fileinfo * -> the requested PHP ext
ension fileinfo is missing from your system.
    - intervention/image 2.3.13 requires ext-fileinfo * -> the requested PHP ext
ension fileinfo is missing from your system.
    - intervention/image 2.3.12 requires ext-fileinfo * -> the requested PHP ext
ension fileinfo is missing from your system.
    - intervention/image 2.3.11 requires ext-fileinfo * -> the requested PHP ext
ension fileinfo is missing from your system.
    - intervention/image 2.3.10 requires ext-fileinfo * -> the requested PHP ext
ension fileinfo is missing from your system.
    - intervention/image 2.3.1 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.3.0 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.2.2 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.2.1 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - intervention/image 2.2.0 requires ext-fileinfo * -> the requested PHP exte
nsion fileinfo is missing from your system.
    - Installation request for intervention/image ~2.2 -> satisfiable by interve
ntion/image[2.2.0, 2.2.1, 2.2.2, 2.3.0, 2.3.1, 2.3.10, 2.3.11, 2.3.12, 2.3.13, 2
.3.14, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 2.3.7, 2.3.8, 2.3.9, 2.4.0].

  To enable extensions, verify that they are enabled in your .ini files:
    - F:\xampp\php\php.ini
  You can also run `php --ini` inside terminal to see which files are used by PH
P in CLI mode.



This you must to go to your php.ini and edit it in commented line:
; Laravel drop comment
extension=php_fileinfo.dll

drop the comment in
;extension=php_fileinfo.dll
to be
extension=php_fileinfo.dll

Then save it and go again with composer install in you directory with terminal or cmd