Local installation of WebIDE leads to 404

Hello everybody,

what I've done is setting up the WebIDE according to to the official documentation.

Everything worked pretty fine until I came to the chapter 3.1.4 "Starting SAP WebIDE". When I try to access http://localhost:8080/webide/index.html I'm just getting an error 404.

HTTP ERROR: 404

Problem accessing /webide. Reason:

    ProxyServlet: /webide

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OR:

HTTP ERROR: 404

Problem accessing /webide/index.html. Reason:

    ProxyServlet: /webide/index.html

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What can possibly be wrong?

Thanks in advance and best regards,

Kai