Error 403--Forbidden when trying to access the BPM UI in BPM 12c

I deployed a human task flow ui in BPM 12c and when i click on the task in BPM i was not able to see the flow.

I went ahead and go to the deployment page of weblogic admin console and tried to open the ui page from the link there but i got below error



Error 403--Forbidden

From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:

10.4.4 403 Forbidden

The server understood the request, but is refusing to fulfill it. Authorization will not help and the request SHOULD NOT be repeated. If the request method was not HEAD and the server wishes to make public why the request has not been fulfilled, it SHOULD describe the reason for the refusal in the entity. This status code is commonly used when the server does not wish to reveal exactly why the request has been refused, or when no other response is applicable.



Not sure of the reason but i made this change in my web.xml file for the ui and redeployed the project and then i was able to see the flow in the human task page of BPM

for the parameter "org.apache.myfaces.trinidad.security.FRAME_BUSTING"

I changed the value from differentOrigin to never