@ilex01 try to stop your wamp. when you do php artisan serve it be served by PHP (unless you need your MySQL on the wamp)
If you go to your terminal where you run the php artisan serve you can see info there regarding your error if there's any.
Or check also the storage/logs files. your screen capture doesn't give us any more info about the issue other than the blank page.
I don't understand what do you mean?
You opened a cmd windows to run the php artisan serve command. Under the command do you see any error messages ???
Go to the project's folder there and then in logs on the storage folder. You should have one or more log files. There should be more info
you don't do both artisan serve AND use wamp
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