Unity Package Manager Error
On Windows:
C:\Windows\System32\drivers\etc\hosts
On macOS:
/etc/hosts
Make sure the localhost host name is defined like this
127.0.0.1 localhost
Another solution other users have reported to work is to set the UNITY_NOPROXY environment variable to localhost:
On Windows command prompt,
setx UNITY_NOPROXY localhost,127.0.0.1
On Mac > terminal,
export UNITY_NOPROXY=localhost,127.0.0.1
mac
Win32Exception: ApplicationName=’/Applications/Unity/Hub/Editor/2019.2.0f1/PlaybackEngines/AndroidPlayer/SDK/tools/bin/sdkmanager’, CommandLine=’–list’, CurrentDirectory=’/Users/mpattie/project_k_viewer_app/ProjectKViewer’, Native error= Access denied
chown -R 用户名:admin /Applications/Unity