This application is out of date, please click the refresh button on your browser

Hello!
I have a problem with my GWT application. I deploy on Jetty server and
it runs. But when I perform a server call (class on server package of
GWT), the server returns an error message. The message is:

7|0|6|http://localhost/zbapp/zb_app/|A31E1254E17F9AD731856D6BE34124A2|
main.java.com.gwt.app.client.GreetingService|greetServer|
java.lang.String/2004016611||1|2|3|4|2|5|5|6|6|
//EX[2,1,
["com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException/
3936916533","This application is out of date, please click the refresh
button on your browser. ( Expecting version 5 from client, got 7. )"],
0,5]

However, the server returns a 200 code that is OK.
I have updated the browser, clear up browser cache and recompiled the
application, but it does not run. What is the solution for that??
Thanks in advance!
Regards!

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