Nuget Restore issue on App Center

Question

I am getting this error when I try to build the app on App Center from Microsoft.

Errors in packages.config projects https://{myDomainOnVSTS}.com/_packaging/CustomNugetPackages/nuget/v3/index.json: Unable to load the service index for source https://{myDomainOnVSTS}.pkgs.visualstudio.com/_packaging/CustomNugetPackages/nuget/v3/index.json. The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters. https://api.nuget.org/v3/index.json: Package 'CalendarWithNoDeselect.1.0.0' is not found on source

The strange part is that, the app builds fine on VSTS and on my local machine using the private feed.

Here is the Nuget.Config file

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <add key="CustomNugetPackages" value="https://{myDomainOnVSTS}.pkgs.visualstudio.com/_packaging/CustomNugetPackages/nuget/v3/index.json" />
  </packageSources>
  <activePackageSource>
    <add key="All" value="(Aggregate source)" />
  </activePackageSource>
 <packageSourceCredentials>
    <CustomNugetPackages>
      <add key="Username" value="$USER_VARIABLE" />
      <add key="Password" value="$PASSWORD_VARIABLE" />
    </CustomNugetPackages> 
  </packageSourceCredentials>
</configuration>

Can someone Kindly help me with this issue.

EDIT1: The issue is with Environment Variables since when I don't used them the package is restored as the following.

kirotab kirotab · Accepted Answer · 2018-06-07T20:35:57

Hey your issue with the environment variables seems to be because of syntax error in the way you've configured them in the Nuget.Config file. Try editing them to:

<add key="Username" value="%USER_VARIABLE%" />
<add key="Password" value="%PASSWORD_VARIABLE%" />

Just for reference - https://docs.microsoft.com/en-us/appcenter/build/custom/variables/

Nuget Restore issue on App Center

2 Answers