Routing in .net core.

Question

I have set default routing in razor this my code. But it's not working

services.AddMvc().AddRazorPagesOptions(options =>
{
options.Conventions.AddPageRoute("/PageTemplates/_Home", "");
});
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (!env.IsDevelopment())
{
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseCofoundry();
app.UseRouting();
app.UseEndpoints(endpoints =>
{
endpoints.MapRazorPages();
});

By default Error.cshtml page run i want to run home page .Please help me