می خواهم یک پک نصب کنم همچین اروری می دهد
ارور:
Install-Package : Unable to load the service index for source
https://api.nuget.org/v3/index.json.
At line:1 char:1
+ Install-Package MaterialSkin
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : NotSpecified: (:) [Install-Package], Exception
+ FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PackageManagement
.PowerShellCmdlets.InstallPackageCommand
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