"The build failed. Fix the build errors and run again."

[CentralizedSky]

┌──(central㉿20-Sky)-[~/Desktop/Covenant/Covenant]
└─$ dotnet run

/home/central/dotnet/sdk/3.1.100/NuGet.targets(123,5): error : Unable to load the service index for source https://api.nuget.org/v3/index.json. [/home/central/Desktop/Covenant/Covenant/Covenant.csproj]
/home/central/dotnet/sdk/3.1.100/NuGet.targets(123,5): error : The SSL connection could not be established, see inner exception. [/home/central/Desktop/Covenant/Covenant/Covenant.csproj]
/home/central/dotnet/sdk/3.1.100/NuGet.targets(123,5): error : The remote certificate is invalid according to the validation procedure. [/home/central/Desktop/Covenant/Covenant/Covenant.csproj]

The build failed. Fix the build errors and run again.