missing content on server when deployed blazor ServerSide app

I deployed my Blazor server side App on my server.
Publish was OK, success.
But when I look on the repository where its published, I find lot of dll etc… but no content that I used to work with in local when I build the app…
All is working good, I access the web app from my browser, but as I use to work with some template personal files, they are missing on the server and the logic behind is lost…

How to cancel async Task from the client

I have on ASP.Net C# web API with an endpoint for the import. Javascript client sends a list of items to this API and API process this list in another thread (long task) and immediately returns unique id (GUID) of process. Now I need the cancel the background task from the CLIENT. Is possible to somehow send the cancelation token from the client? I have tried to add CancellationToken as a parameter to my controller async action but I don’t know how to pass it from the client. For simplification, we can use as the client the Postman app.