Build Error in 2021.4.2 community edition

when I open an existed project, the UiPath would show an error.
The error message are as follows:

21.4.2+Branch.master.Sha.3b603a5ec0f1b6af959e38d84177ff1d548b3ea2

The feed ‘https://www.myget.org/F/workflow/ [https://www.myget.org/F/workflow/]’ lists package ‘UiPath.UIAutomation.Activities.20.10.9’ but multiple attempts to download the nupkg have failed. The feed is either invalid or required packages were removed while the current operation was in progress. Verify the package exists on the feed and try again.
“dependencies”: {
“UiPath.Excel.Activities”: “[2.9.5]”,
“UiPath.Mail.Activities”: “[1.9.5]”,
“UiPath.Python.Activities”: “[1.1.7594.35963]”,
“UiPath.System.Activities”: “[20.10.3]”,
“UiPath.UIAutomation.Activities”: “[20.10.9]”,
“UiPath.WebAPI.Activities”: “[1.4.5]”
},

I also repaired in studio,and also changed the version of packages.
It didn’t work.
what’s the matter?
@loginerror

Hi @jmy,
Do you have still this issue? I tested it and mentioned version is downloading without any issue on my end. Sometimes myget.org might have a bad day. Please check again.