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Vaadin Forum3. Vaadin 6, 7, 8

Proxy server received invalid response

Deepali Sakunde
7 years ago Sep 03, 2015 6:14am

Hi All,

I have Vaadin 6 application running on tomcat 7 on my local.

it was running successfully on testing environment till present.(tomcat8)

Now after some enhancements , it is again deployed on testing env(tomcat 8)
(running properly on local(tomcat7)).

but is throwing an error.I dont understand that error.Please see the attached screenshot

Communication ProblemTake note of any unsaved data, and Click here to continue(Syntax error): unexpected identifier "Original JSON text:HTML PUBLIC " //IETF/DTD HTML 2.0//EN"?Proxy ErrorProxy server received an invalid response from an upstream server.The proxy server could not handle the request POST/ztime/UIDL. Reason: Error reading from remote server 

Please if any one can help me, will be appreciated.

Regards,
Deepali