SignalR Failing after adding Letsencrypt SSL to nginx

asp.net-core nginx ssl-certificate signalr certbot

In Startup.js / ConfigureServices:

services.AddSignalR(options => {    options.KeepAliveInterval = TimeSpan.FromSeconds(15);    options.EnableDetailedErrors = true;});

In Startup.js / Configure:

app.UseWebSockets();app.UseStaticFiles();

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