I created a Asp.Net Core app with Visual Studio and used the publish option of VS to publish my app on my Azure account.
After publishing it, I used the link to access my website but I get a "HTTP Error 500.30 - ASP.NET Core app failed to start"
I went to the console in Azure to manually start my app and have more detail about the issue and I got this. 
Not really sure how to solve this issue with my port
Below is the code from program.cs
var connectionString = builder.Configuration.GetConnectionString("LocalConnection");
builder.Services.AddDbContext<LotharDataBaseContext>(options =>
options.UseSqlServer(connectionString));
builder.Services.AddControllersWithViews();
builder.Services.AddAuthentication(NegotiateDefaults.AuthenticationScheme)
.AddNegotiate();
builder.Services.AddAuthorization(options =>
{
// By default, all incoming requests will be authorized according to the default policy.
options.FallbackPolicy = options.DefaultPolicy;
});
builder.Services.AddRazorPages();
var app = builder.Build();
// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
app.UseExceptionHandler("/Home/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthentication();
app.UseAuthorization();
app.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
app.Run();
