Docker build stopped working

Docker build stopped working

Hello, i have a dockerfile than build correctly, but 5 days ago without any change in code i´ll stop building.

Dokcer build response me that:

Restore completed in 159.68 ms for /app/s3-api/gutenberg-s3.csproj.
/usr/share/dotnet/sdk/3.1.200/Sdks/Microsoft.NET.Sdk/targets/Microsoft.PackageDependencyResolution.targets(234,5): error NETSDK1064: Package AWSSDK.S3, version 3.3.110.35 was not found. It might have been deleted since NuGet restore. Otherwise, NuGet restore might have only partially completed, which might have been due to maximum path length restrictions. [/app/s3-api/gutenberg-s3.csproj]
The command '/bin/sh -c dotnet publish gutenberg-s3.csproj -c Release -o out' returned a non-zero code: 1

Y try to locate this package on nugget and it´s fine. I actualize librarys and still crashing.

Can you help me?