Unable to do Jenkins Version upgrade

Hi Team,

Im unable to do Jenkins Version upgrade. I got error like below. Could you please help on this
Caused: java.io.IOException: Failed to load
Caused: java.io.IOException: Failed to download from https://updates.jenkins.io/download/plugins/workflow-api/2.47/workflow-api.hpi (redirected to: https://mirrors.tuna.tsinghua.edu.cn/jenkins/plugins/workflow-api/2.47/workflow-api.hpi)


The Tsinghua university location is able to download that file to my machine. No alarms have been raised for reachability of that mirror in the last 24 hours.


You may need to check with your network administrators to see if they are blocking access to that location. We’d love to have additional mirror sites if your organization would like to sponsor a mirror.

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