Can't find client cache.js


I have made an Application with VAADIN 13. On my local testserver everything works fine and I have no issues.

When it comes to deploying the application I do get a blank page.

When I look into the console ther is an erromessage that
can’t be loaded.

In the serverlog everything seems to be fine. There is a UidlWriter creating an response and a RouteData is targeting a LoginScreen and in another log there is a vaadin…ServletDeployer initalised.

But there is no error.

I don’t get the problem here.

Can somebody help me?

Best Regards