Reference NBitcoin.Secp256k1 library
MODIFY
WalletWasabi/WalletWasabi.csproj
WalletWasabi/WalletWasabi.csproj
<PackageReference Include="Microsoft.AspNetCore.Mvc.NewtonsoftJson" Version="3.1.1" />
<PackageReference Include="NBitcoin" Version="5.0.18" />
<PackageReference Include="Microsoft.Win32.Registry" Version="4.7.0" />
+ <PackageReference Include="NBitcoin.Secp256k1" Version="1.0.1" />
</ItemGroup>
<ItemGroup>

Reference NBitcoin.Secp256k1 library