Details about Problem

NuGet product used: VS UI

NuGet version (x.x.x.xxx): 5.7

dotnet.exe --version (if appropriate): N/A

VS version (if appropriate): 16.7.3

OS version: Microsoft Windows [Version 10.0.19041.508]

Worked before? If so, with which NuGet version: N/A

Detailed repro steps so we can see the same problem

1. Add chocolatey NuGet feed https://chocolatey.org/api/v2/ in Options > NuGet Package Manager > Package Sources
2. Open 'Manage NuGet Packages in any project/solution
3. Select chocolatey NuGet feed
4. Search for 'legendary'