shopware Upgrade from version 3 to 5.2

Hello Mario,
I did as you said and uploaded the shopware 4.0.3 to the server and when oppening http://mydomain/recovery/update/index.php I get this error: and server internet error in  http://mydomain/recovery/update.php 

Uncaught Error: Class ‘Pimple’ not found in /…/recovery/update/src/app.php:34 Stack trace: #0 /…/recovery/update/index.php(31): require() #1 {main} thrown in  /…/recovery/update/src/app.php  on line  34