Server stops when running Pact verification on .NET Provider

When I am running the .NET 8 Provider for verifying my contract, the server seems to just stop during the verify. I'm not getting any useful logs too so I can't tell why it's just stopping. I can, however, get a test to pass when I use a delay and hit the endpoint of the server through Postman during this delay and before the .Verify() is hit.

public class ContractTests : IClassFixture<ApiFixture>
{
    private readonly ITestOutputHelper _output;
    private readonly ApiFixture _fixture;
    private readonly Uri _pactBrokerBaseUri = new Uri("<pactBrokerUri>");
    private readonly string _providerName = "provider";
    private readonly string _consumerName = "consumer";

    public ContractTests(ITestOutputHelper outputHelper, ApiFixture fixture)
    {
        _fixture = fixture;
        _output = outputHelper;
    }
    [Fact]
    public async Task EnsureProviderApiHonoursPactWithConsumer()
    {
        // Arrange
        var config = new PactVerifierConfig
        {
            Outputters = new List<Pact.IOutput>
            {
                new XunitOutput(_output)
            },
            LogLevel = PactLogLevel.Debug,
        };
        // Act
        IPactVerifier pactVerifier = new PactVerifier(_providerName, config);
        var _pactVerifier = pactVerifier
            .WithHttpEndpoint(_fixture.ServerUri)
            .WithUriSource(
                new Uri($"{_pactBrokerBaseUri}pacts/provider/{_providerName}/consumer/{_consumerName}/latest"));

        // This is in place to allow a call to the server from Postman
        await Task.Delay(TimeSpan.FromSeconds(30));

        // Assert
        _pactVerifier.Verify();
    }
}

This test fails unless I hit the same endpoint using Postman during the delay time.

public class ApiFixture : IDisposable
{
    private readonly IHost _server;
    public Uri ServerUri { get; }

    public ApiFixture()
    {
        ServerUri = new Uri("https://localhost:5066");
        _server = CreateHostBuilder(ServerUri)
            .Build();
        _server.Start();
    }

    public static IHostBuilder CreateHostBuilder(Uri serverUri) =>
        Host.CreateDefaultBuilder()
            .UseSerilog()
            .ConfigureWebHostDefaults(webBuilder =>
            {
                webBuilder.UseUrls(serverUri.ToString());
                webBuilder
                    .UseStartup<TestStartup>();
            });

    public void Dispose()
    {
        _server.Dispose();
    }
}

This server does run on the correct port and can be hit from Postman during the timeout but if I don't hit Postman it just stops during the .Verify()

The only error I get is:

Request Failed - error sending request for url (https://localhost:5066/api/v1/searchEndpoint)

and the logs just end with:

DEBUG ThreadId(02) verify_interaction{interaction="a Search request"}: hyper_util::client::legacy::connect::http: connecting to [::1]:5066
DEBUG ThreadId(02) verify_interaction{interaction="a Search request"}: hyper_util::client::legacy::connect::http: connected to [::1]:5066
WARN ThreadId(02) pact_matching::metrics: 

In this case the issue was that the timeout was not long enough on the _pactVerifier. By default, this time is set to 5 seconds PactNet and this can be overridden using

_pactVerifier.WithRequestTimeout(TimeSpan.FromSeconds(20))

to increase the verifier timeout to 20 seconds in this case.