VaultSharp | comprehensive cross-platform .NET Library | Identity Management library

Can not seem to get pass this error. hashicorp vault is running on my k3s env. I can get to the vault UI fine. I can also curl vault [POST, GET] using the following :

I am using LanguageExt to have functional programming features in C#. I have a method in which I want to build an instance of VaultSharp to access our HashiCorp Vault service. My goal is to create an instance of VaultClientSettings (see methods below) through a chain of two Eithers. In the end, either return an exception from any Either in the chain or the instance of VaultClientSettings. I think that I am close but cannot make the last step work. I'd appreciate your suggestions.

Here are links to the FP library for C# and the VaultSharp library;

• https://github.com/louthy/language-ext/tree/main/LanguageExt.Core
• https://github.com/rajanadar/VaultSharp

Here is an image showing the error that I am seeing:

Everytime I attempt to copy Brevity.Api.xml, it'll always end up with a 'Not found' issue and would cause build failures. Listing the files in the directory of the where the docker build is at before executing the copying instructions show that the file is indeed there. What am I missing? Check step 11 (At the bottom of the log) in the build log