We are facing issues with Appian 7.7 server. Applications were running fine init

We are facing issues with Appian 7.7 server. Applications were running fine initially and now we are facing the below mentioned issue after clicking on Actions. Also after clicking on reports tab a blank screen appears and I am unable to open any tasks. I am logging as system administrator.

The application server logs shows the below error :
ERROR com.appiancorp.security.cors.CorsFilter - CORS request rejected; invalid request from x.y.z to /rest/a/uicontainer/latest/FZ7vfQ/view

Thanks.

OriginalPostID-167431

OriginalPostID-167431

  Discussion posts and replies are publicly visible