Have you tried running php artisan voyager:install but you keep getting an error that a VoyagerServiceProvider.php file is missing.
All your artisan commands are also throwing this error too.
Checking the vendor folder, I found that the tcg/voyager folder was empty and after hours of research I found a solution:
Step 1:
Go to https://github.com/the-control-group/voyager and clone this repo .
Step 2:
Unzip this repo and copy the content of the src folder into your vendor/tcg/voyager folder.
Step 3:
Run composer dump-autoload and php artisan cache:clear to be sure nothing is being cached.
Step 4:
Run your php artisan voyager:install command again.