Java Application started but not found

Hi,

I have a problem regarding this OpenSAP course: https://open.sap.com/courses/hanacloud3-1/items/6XUMTXiXKcrGWmSptapuwz

I tried to deploy the example application from eclipse and it started up in the cockpit but when I try to go to the Link the answer from the server is 404 not found. I attached a Screenshot from the cockpit.

Do you know where my problem could be?

Are there any additional Information you need?

Thank you very much in advance!