Blocked a frame with origin "http://NEXUSHOST:8081" from accessing a cross-origin frame

Hi,
Something bothered me for a long time, I failed to upload the local jar package in the UI http://NEXUSHOST:8081/#browse/upload:maven-repository and return error information
Blocked a frame with origin “http://NEXUSHOST:8081” from accessing a cross-origin frame


Error log printed in nexus.log org.apache.commons.fileupload.FileUploadException: Early EOF and java.util.concurrent.TimeoutException: Idle timeout expired: 30000/30000 ms
Please suggest a way to mitigate the issue, thanks!

Hard to tell exactly from this… but it seems something is messed up with whatever networking has been put in front of Nexus Repo. If you’re using a reverse proxy be sure to configure it according to our recommendations: https://help.sonatype.com/display/NXRM3/Run+Behind+a+Reverse+Proxy