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Parallel local testing using selenium, specflow, nunit without selenium grid

I am trying to make tests running parallel on my local machine without using selenium grid. My problem is with Firefox driver. I have two tests on the same website. When I execute below code for FirefoxDriver one test is abadoned and I have timeout error. When I am executing using ChromeDriver or EdgeDriver there is no issue.
[Binding]
public class Hooks
{
public IWebDriver driver;
private IObjectContainer objectContainer;
public Hooks(IObjectContainer objectContainer)
{
this.objectContainer = objectContainer;
}
[BeforeScenario]
public void BeforeScenario()
{
driver = new FirefoxDriver(AppDomain.CurrentDomain.BaseDirectory);
objectContainer.RegisterInstanceAs(driver);
}
[AfterScenario]
public void AfterScenario()
{
driver.Close();
}
Scope of parallelism is set to [assembly: Parallelizable(ParallelScope.Fixtures)]
Error:
Message: 
OpenQA.Selenium.WebDriverException : The HTTP request to the remote WebDriver server for URL http://localhost:55285/session timed out after 60 seconds.
----> System.Threading.Tasks.TaskCanceledException : The request was canceled due to the configured HttpClient.Timeout of 60 seconds elapsing.
----> System.TimeoutException : The operation was canceled.
----> System.Threading.Tasks.TaskCanceledException : The operation was canceled.
----> System.IO.IOException : Unable to read data from the transport connection: The I/O operation has been aborted because of either a thread exit or an application request..
----> System.Net.Sockets.SocketException : The I/O operation has been aborted because of either a thread exit or an application request.
Stack Trace: 
HttpCommandExecutor.Execute(Command commandToExecute)
DriverServiceCommandExecutor.Execute(Command commandToExecute)
WebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters)
WebDriver.StartSession(ICapabilities desiredCapabilities)
WebDriver.ctor(ICommandExecutor executor, ICapabilities capabilities)
FirefoxDriver.ctor(FirefoxDriverService service, FirefoxOptions options, TimeSpan commandTimeout)
FirefoxDriver.ctor(String geckoDriverDirectory, FirefoxOptions options, TimeSpan commandTimeout)
FirefoxDriver.ctor(String geckoDriverDirectory, FirefoxOptions options)
FirefoxDriver.ctor(String geckoDriverDirectory)
Hooks.BeforeScenario() line 57
BindingInvoker.InvokeBinding(IBinding binding, IContextManager contextManager, Object[] arguments, ITestTracer testTracer, TimeSpan& duration)
SafeBindingInvoker.InvokeBinding(IBinding binding, IContextManager contextManager, Object[] arguments, ITestTracer testTracer, TimeSpan& duration)
TestExecutionEngine.OnAfterLastStep()
TestRunner.CollectScenarioErrors()
LoginFeature.ScenarioCleanup()
LoginFeature.StandardUserIsAbleToLogIn() line 9
--TaskCanceledException
HttpClient.HandleFailure(Exception e, Boolean telemetryStarted, HttpResponseMessage response, CancellationTokenSource cts, CancellationToken cancellationToken, CancellationTokenSource pendingRequestsCts)
HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
HttpCommandExecutor.MakeHttpRequest(HttpRequestInfo requestInfo)
HttpCommandExecutor.Execute(Command commandToExecute)
--TimeoutException
--TaskCanceledException
HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
--IOException
AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken)
Int32>.GetResult(Int16 token)
HttpConnection.InitialFillAsync(Boolean async)
HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
--SocketException
Standard Output: 
-> error: The HTTP request to the remote WebDriver server for URL http://localhost:55285/session timed out after 60 seconds. (62,2s)
Given website is opened
-> skipped because of previous errors
When user provides credentials
-> skipped because of previous errors
Then is successfuly logged in
-> skipped because of previous errors
-> error: Object reference not set to an instance of an object. (0,0s)
Does anyone have any suggestions/ ideas why this is happening?

After reinstalling the drivers and PC restart everything started working. I forgot about this fundamental rule to turn on and off :)

HttpClient doesn't load the content of the valid link

I use HttpClient to get the content of the pages on the internet and was faced with weird behavior.
Some sites load perfectly, but some requests fail by timeout. The thing is that the links work perfectly in the browser.
E.g. I have the following link: https://www.luisaviaroma.com/en-gb/shop/women/shoes?lvrid=_gw_i4. I can open it in the browser, but my code doesn't work:
var httpClient = new HttpClient();
var response = await httpClient.GetAsync("https://www.luisaviaroma.com/en-us/sw/women?lvrid=_gw");
What can be the cause of it?
Probably the issue is with the _ symbol? How should I fix it then?
I also tried to use 3rd party libraries like RestSharp but got the same result.
The exception is:
System.Threading.Tasks.TaskCanceledException: The request was canceled due to the configured HttpClient.Timeout of 100 seconds elapsing.
---> System.TimeoutException: The operation was canceled.
---> System.Threading.Tasks.TaskCanceledException: The operation was canceled.
---> System.IO.IOException: Unable to read data from the transport connection: The I/O operation has been aborted because of either a thread exit or an application request..
---> System.Net.Sockets.SocketException (995): The I/O operation has been aborted because of either a thread exit or an application request.
--- End of inner exception stack trace ---
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken)
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.System.Threading.Tasks.Sources.IValueTaskSource<System.Int32>.GetResult(Int16 token)
at System.Net.Security.SslStream.EnsureFullTlsFrameAsync[TIOAdapter](TIOAdapter adapter)
at System.Net.Security.SslStream.ReadAsyncInternal[TIOAdapter](TIOAdapter adapter, Memory`1 buffer)
at System.Net.Http.HttpConnection.InitialFillAsync(Boolean async)
at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
--- End of inner exception stack trace ---
at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.SendWithVersionDetectionAndRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
--- End of inner exception stack trace ---
--- End of inner exception stack trace ---
at System.Net.Http.HttpClient.HandleFailure(Exception e, Boolean telemetryStarted, HttpResponseMessage response, CancellationTokenSource cts, CancellationToken cancellationToken, CancellationTokenSource pendingRequestsCts)
at System.Net.Http.HttpClient.<SendAsync>g__Core|83_0(HttpRequestMessage request, HttpCompletionOption completionOption, CancellationTokenSource cts, Boolean disposeCts, CancellationTokenSource pendingRequestsCts, CancellationToken originalCancellationToken)
at Suits.Scheduler.SchedulerHostedService.UpdateClothesLinksAsync(SuitsDbContext dbContext) in C:\Repo\server\src\Suits.Scheduler\SchedulerHostedService.cs:line 98

I got a 403 Error, when not setting appropriate values for the Header-Accept field.
The result is a text/html, so you need to add the appropriate Header:
HttpRequestMessage msg = new HttpRequestMessage(
HttpMethod.Get,
"https://www.luisaviaroma.com/en-gb/shop/women/shoes?lvrid=_gw_i4"
);
msg.Headers.Add("Accept", "text/html");
HttpClient client = new HttpClient();
var response = client.SendAsync(msg).Result;
EDIT:
In the given case, OP needs to add the Accept-Encoding header two. The answer of D A pointed this out. Code to add the field:
msg.Headers.Add("Accept-Encoding", "br");

This is the proper request that will return a 200 OK code:
HttpRequestMessage msg = new HttpRequestMessage(HttpMethod.Get,"https://www.luisaviaroma.com/en-us/sw/women?lvrid=_gw");
msg.Headers.Add("Accept", "text/html");
msg.Headers.Add("accept-encoding", "gzip, deflate, br");
HttpClient client = new HttpClient();
var response1 = client.SendAsync(msg).Result;
The response is send compressed and that is why you have issues with it.

Timeout with HTTPClient C# on VPS Linux, ping and curl OK, no firewall

I want to retrieve the content of a page with httpclient. I did a simple method, which works well on visual studio.
private async Task<string> Connection(string Url)
{
using HttpClient client = new();
client.DefaultRequestHeaders.Add("Accept", "application/json");
client.DefaultRequestHeaders.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36 OPR/77.0.4054.277");
client.DefaultRequestHeaders.Add("Cache-Control", "no-cache, no-store, must-revalidate");
client.DefaultRequestHeaders.Add("Accept-Language", "fr-FR,fr;q=0.9,en-US;q=0.8,en;q=0.7");
client.DefaultRequestHeaders.Add("Pragma", "no-cache");
double timestamp = GlobalMethod.Timestamp();
string json = await client.GetStringAsync(Url);
return json;
}
But when I run my application on a linux VPS (Ubuntu, host OVH, .NET 5), Httpclient returns an error timeout.
On my VPS, the ping to the url I want to retrieve, and CURL function, works fine. But not the Httpclient.
Same settings of my Postman request, and no problem with it.
Do you have an idea of ​​the problem ?
It looks a lot like this topic, without me understanding how to solve it: httpClient call in C# goes to timeout, while cUrl is working
API link : https://api.store.nvidia.com/partner/v1/feinventory?skus=FR~NVGFT070~NVGFT080~NVGFT090~NVLKR30S~NSHRMT01~NVGFT060T~187&locale=FR
Thanks !
Error with timeout:
System.Threading.Tasks.TaskCanceledException: The request was canceled due to the configured HttpClient.Timeout of 100 seconds elapsing.
---> System.TimeoutException: The operation was canceled.
---> System.Threading.Tasks.TaskCanceledException: The operation was canceled.
---> System.IO.IOException: Unable to read data from the transport connection: Operation canceled.
---> System.Net.Sockets.SocketException (125): Operation canceled
--- End of inner exception stack trace ---
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error, CancellationToken cancellationToken)
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.GetResult(Int16 token)
at System.Net.Security.SslStream.ReadAsyncInternal[TIOAdapter](TIOAdapter adapter, Memory`1 buffer)
at System.Net.Http.HttpConnection.FillAsync(Boolean async)
at System.Net.Http.HttpConnection.ReadNextResponseHeaderLineAsync(Boolean async, Boolean foldedHeadersAllowed)
at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
--- End of inner exception stack trace ---
at System.Net.Http.HttpConnection.SendAsyncCore(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean async, Boolean doRequestAuth, CancellationToken cancellationToken)
at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, Boolean async, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.SendAsyncCore(HttpRequestMessage request, HttpCompletionOption completionOption, Boolean async, Boolean emitTelemetryStartStop, CancellationToken cancellationToken)
--- End of inner exception stack trace ---
--- End of inner exception stack trace ---
at System.Net.Http.HttpClient.SendAsyncCore(HttpRequestMessage request, HttpCompletionOption completionOption, Boolean async, Boolean emitTelemetryStartStop, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.GetStringAsyncCore(HttpRequestMessage request, CancellationToken cancellationToken)
at Castiel_Bot_Discord.Modules.NvidiaCommand.Connection(String Url) in C:\Users\gaeta\source\repos\Castiel_Bot_Discord\Castiel_Bot_Discord\Modules\NvidiaCommand.cs:line 114
at Castiel_Bot_Discord.Modules.NvidiaCommand.SearchGpu(String args) in C:\Users\gaeta\source\repos\Castiel_Bot_Discord\Castiel_Bot_Discord\Modules\NvidiaCommand.cs:line 42

Same issue on my Debian machine. Suddenly timeout exception occured for https requests, but I did not performed any configuration steps before at all. The app just stopped to work!
What I've found out to solve:
https://github.com/dotnet/runtime/issues/47267
According to that you need to disable ipv6. For my host I've changed sysctl.conf as described here: https://wiki.it-kb.ru/unix-linux/debian/how-to-turn-off-ipv6-in-debian-linux
Now the timeout issue solved for me.

Intermittent connection failures when using Google Translation API using the C# API

I am getting intermittent errors when using the Google translation C# APIs. Weirdly enough I never ever get the error on my local PC, it's only when I run it on our Test and Prod servers do I get the error.
The code is straightforward.
var credential = GoogleCredential.FromJson(#"
{
// .....text from my google credentials json file
}");
var client = TranslationClient.Create(credential);
var response = client?.TranslateText("Hello World.", "fr");
The error I get is
System.Net.Http.HttpRequestException: No connection could be made because the target machine actively refused it ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it
at System.Net.Http.ConnectHelper.ConnectAsync(String host, Int32 port, CancellationToken cancellationToken)
--- End of inner exception stack trace ---
at Google.Apis.Http.ConfigurableMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.FinishSendAsyncBuffered(Task`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts)
at Google.Apis.Auth.OAuth2.Requests.TokenRequestExtenstions.ExecuteAsync(TokenRequest request, HttpClient httpClient, String tokenServerUrl, CancellationToken taskCancellationToken, IClock clock)
at Google.Apis.Auth.OAuth2.ServiceAccountCredential.RequestAccessTokenAsync(CancellationToken taskCancellationToken)
at Google.Apis.Auth.OAuth2.TokenRefreshManager.RefreshTokenAsync()
at Google.Apis.Auth.OAuth2.TokenRefreshManager.ResultWithUnwrappedExceptions[T](Task`1 task)
at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot)
--- End of stack trace from previous location where exception was thrown ---
at Google.Apis.Auth.OAuth2.TokenRefreshManager.GetAccessTokenForRequestAsync(CancellationToken cancellationToken)
at Google.Apis.Auth.OAuth2.ServiceAccountCredential.GetAccessTokenForRequestAsync(String authUri, CancellationToken cancellationToken)
at Google.Apis.Auth.OAuth2.ServiceCredential.InterceptAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at Google.Apis.Http.ConfigurableMessageHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.FinishSendAsyncBuffered(Task`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts)
at Google.Apis.Requests.ClientServiceRequest`1.ExecuteUnparsedAsync(CancellationToken cancellationToken)
at Google.Apis.Requests.ClientServiceRequest`1.Execute()
at Google.Cloud.Translation.V2.TranslationClientImpl.TranslateText(IEnumerable`1 textItems, String targetLanguage, String sourceLanguage, Nullable`1 model)
at Google.Cloud.Translation.V2.TranslationClient.TranslateText(String text, String targetLanguage, String sourceLanguage, Nullable`1 model)
at QuickStart.Main(String[] args)
I suspect the error is in the authentication code. Curiously it seems to work on the servers in spurts, so connects and translates fine for a period of time, and then stops to do so, throwing the aforementioned error.
Do I need a separate key for every server?
As I said before works flawlessly on my PC - Every. Single. Time.
I am on the currently on a basic account, so not sure if there are any thresholds that I am breaching, but could not find anything in the documentation.

The SSL connection could not be established, see inner exception

I have an Integration project, where my RestAPI's call WCF services of other project to do some CRUD operations.
My project is built on .net core 2.2.102. I deployed my project in BETA environment(PROD in my case) and pointed to the PROD URL's of the WCF services. Then I get this error while trying to run a request from my application :
The SSL connection could not be established, see inner exception.
I tried to reproduce it on my local. but it is working fine from my local machine when I am pointing to the BETA URLS of the WCF services.
I checked the firewall settings. I can see those are fine.
What could be the possible root cause for this? I dont have access to BETA so I cannot deploy with trial and error methods. I am attaching the Inner exception stack trace.
2019-02-04 15:03:50.752 -06:00 [Error] - HTTP Request "GET" in ms
System.ServiceModel.CommunicationException: The SSL connection could not be established, see inner exception. ---> System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception. ---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
--- End of inner exception stack trace ---
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.ThrowException(SocketError error)
at System.Net.Sockets.Socket.AwaitableSocketAsyncEventArgs.GetResult(Int16 token)
at System.Net.FixedSizeReader.ReadPacketAsync(Stream transport, AsyncProtocolRequest request)
at System.Net.Security.SslState.ThrowIfExceptional()
at System.Net.Security.SslState.InternalEndProcessAuthentication(LazyAsyncResult lazyResult)
at System.Net.Security.SslState.EndProcessAuthentication(IAsyncResult result)
at System.Net.Security.SslStream.EndAuthenticateAsClient(IAsyncResult asyncResult)
at System.Net.Security.SslStream.<>c.<AuthenticateAsClientAsync>b__47_1(IAsyncResult iar)
at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
at System.Net.Http.ConnectHelper.EstablishSslConnectionAsyncCore(Stream stream, SslClientAuthenticationOptions sslOptions, CancellationToken cancellationToken)
--- End of inner exception stack trace ---
at System.Net.Http.ConnectHelper.EstablishSslConnectionAsyncCore(Stream stream, SslClientAuthenticationOptions sslOptions, CancellationToken cancellationToken)
at System.Threading.Tasks.ValueTask`1.get_Result()
at System.Net.Http.HttpConnectionPool.CreateConnectionAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Threading.Tasks.ValueTask`1.get_Result()
at System.Net.Http.HttpConnectionPool.WaitForCreatedConnectionAsync(ValueTask`1 creationTask)
at System.Threading.Tasks.ValueTask`1.get_Result()
at System.Net.Http.HttpConnectionPool.SendWithRetryAsync(HttpRequestMessage request, Boolean doRequestAuth, CancellationToken cancellationToken)
at System.Net.Http.AuthenticationHelper.SendWithAuthAsync(HttpRequestMessage request, Uri authUri, ICredentials credentials, Boolean preAuthenticate, Boolean isProxyAuth, Boolean doRequestAuth, HttpConnectionPool pool, CancellationToken cancellationToken)
at System.Net.Http.RedirectHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.DecompressionHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
at System.Net.Http.HttpClient.FinishSendAsyncUnbuffered(Task`1 sendTask, HttpRequestMessage request, CancellationTokenSource cts, Boolean disposeCts)
at System.ServiceModel.Channels.HttpChannelFactory`1.HttpClientRequestChannel.HttpClientChannelAsyncRequest.SendRequestAsync(Message message, TimeoutHelper timeoutHelper)
--- End of inner exception stack trace ---
at System.Runtime.AsyncResult.End[TAsyncResult](IAsyncResult result)
at System.ServiceModel.Channels.ServiceChannel.SendAsyncResult.End(SendAsyncResult result)
at System.ServiceModel.Channels.ServiceChannel.EndCall(String action, Object[] outs, IAsyncResult result)
at System.ServiceModel.Channels.ServiceChannelProxy.TaskCreator.<>c__DisplayClass1_0.<CreateGenericTask>b__0(IAsyncResult asyncResult)
--- End of stack trace from previous location where exception was thrown ---
at UAL.ATW.External.EzCare.EzCareWcfClient.ExecuteWcfServiceCall[TClient,TResult](TClient client, Func`2 execute) in *********************EzCareWcfClient.cs:line 42
at UAL.ATW.External.EzCare.EzCareWcfClient.Execute[TResult](String operationUniqueId, Func`1 functionToExecute) in *****************************\EzCareWcfClient.cs:line 31
at UAL.ATW.External.EzCare.EzCareManager.GetCompensationsIssuedByAgentIdAsync(AgentID agentId) in *****************EzCareManager.cs:line 48
at UAL.ATW.Compensation.CompensationsFacade.GetCompensationsIssuedByAgentIdAsync(AgentID agentId) in **************************\CompensationsFacade.cs:line 117
at UAL.ATW.Services.ITMC.Host.Controllers.CompensationsController.GetCompensationsIssuedByAgentId(String agentId) in ****************************\Controllers\CompensationsController.cs:line 36
at Microsoft.AspNetCore.Mvc.Internal.ActionMethodExecutor.TaskOfIActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeActionMethodAsync()
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeNextActionFilterAsync()
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context)
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync()
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter()
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync()
at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync()
at Microsoft.AspNetCore.Routing.EndpointMiddleware.Invoke(HttpContext httpContext)
at Microsoft.AspNetCore.Routing.EndpointRoutingMiddleware.Invoke(HttpContext httpContext)
at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)
at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)
at

dotnet dev-certs https --trust
This should pop a dialog asking you if you want to add the cert to your trusted store, which you obviously should accept. You'll need to do this for each project. For example, it's not enough to trust your web app, if that web app is connecting to an API app. You need to do the same thing for the API app so that both certs are trusted.