ASP.Net suppress error logging

[Route("/")]
[ApiController]
public class ImageController : Controller {
    private const byte GUID_LENGTH = 36;
    [HttpGet("{guid?}")]
    public IActionResult Index(string? guid) {
        if (string.IsNullOrWhiteSpace(guid) || guid.Length != GUID_LENGTH) {
....

[Route("/")]
[ApiController]
public class ImageController : Controller {
    private const byte GUID_LENGTH = 36;
    [HttpGet("{guid?}")]
    public IActionResult Index(string? guid) {
        if (string.IsNullOrWhiteSpace(guid) || guid.Length != GUID_LENGTH) {
....

public class APIKeyOptions : AuthenticationSchemeOptions {
    public string Header = "X-API-Key";
}

public class APIKeyValidator : AuthenticationHandler<APIKeyOptions> {
    public APIKeyValidator(IOptionsMonitor<APIKeyOptions> options, ILoggerFactory logger, UrlEncoder encoder, ISystemClock clock) : base(options, logger, encoder, clock) { }
    
    protected override async Task<AuthenticateResult> HandleAuthenticateAsync() {
        if (!Request.Headers.TryGetValue(Options.Header,out StringValues @string)) return AuthenticateResult.Fail("No API Key provided");
        string apiKey = @string.ToString();
        if (string.IsNullOrWhiteSpace(apiKey)) return AuthenticateResult.Fail("API Key is null or empty");
        if (!Program.APIKeys.Contains(apiKey)) return AuthenticateResult.Fail("Invalid API Key");

        return AuthenticateResult.Success(new AuthenticationTicket(new ClaimsPrincipal(new ClaimsIdentity([new Claim("APIKeyAuthorization", apiKey)], "APIKeyAuthorization")), Scheme.Name));
    }
}

public class APIKeyOptions : AuthenticationSchemeOptions {
    public string Header = "X-API-Key";
}

public class APIKeyValidator : AuthenticationHandler<APIKeyOptions> {
    public APIKeyValidator(IOptionsMonitor<APIKeyOptions> options, ILoggerFactory logger, UrlEncoder encoder, ISystemClock clock) : base(options, logger, encoder, clock) { }
    
    protected override async Task<AuthenticateResult> HandleAuthenticateAsync() {
        if (!Request.Headers.TryGetValue(Options.Header,out StringValues @string)) return AuthenticateResult.Fail("No API Key provided");
        string apiKey = @string.ToString();
        if (string.IsNullOrWhiteSpace(apiKey)) return AuthenticateResult.Fail("API Key is null or empty");
        if (!Program.APIKeys.Contains(apiKey)) return AuthenticateResult.Fail("Invalid API Key");

        return AuthenticateResult.Success(new AuthenticationTicket(new ClaimsPrincipal(new ClaimsIdentity([new Claim("APIKeyAuthorization", apiKey)], "APIKeyAuthorization")), Scheme.Name));
    }
}

[Route("image")]
[ApiController]
public class ImageController : ControllerBase {
    [HttpGet("{id?}")]
    [AllowAnonymous]
    public IResult Index(Guid? id) {
        if (id == null) {
            Console.WriteLine($"{Request.HttpContext.Connection.RemoteIpAddress}: GET {id}: BadRequest: GUID is null or invalid length");
            return Results.BadRequest("Rejected: Invalid");
        }

        return Results.Ok();
    }  

    public string GetContentTypeByExtension(string extension) {
        return extension switch {
            "jpg" or "jpeg" => "image/jpeg",
            "png" => "image/png",
            "gif" => "image/gif",
            "bmp" => "image/bmp",
            "tiff" => "image/tiff",
            "webp" => "image/webp",
            _ => "application/octet-stream",
        };
    }
}

[Route("image")]
[ApiController]
public class ImageController : ControllerBase {
    [HttpGet("{id?}")]
    [AllowAnonymous]
    public IResult Index(Guid? id) {
        if (id == null) {
            Console.WriteLine($"{Request.HttpContext.Connection.RemoteIpAddress}: GET {id}: BadRequest: GUID is null or invalid length");
            return Results.BadRequest("Rejected: Invalid");
        }

        return Results.Ok();
    }  

    public string GetContentTypeByExtension(string extension) {
        return extension switch {
            "jpg" or "jpeg" => "image/jpeg",
            "png" => "image/png",
            "gif" => "image/gif",
            "bmp" => "image/bmp",
            "tiff" => "image/tiff",
            "webp" => "image/webp",
            _ => "application/octet-stream",
        };
    }
}

public string GetContentTypeByExtension(string extension) {
    return extension switch {
        "jpg" or "jpeg" => "image/jpeg",
        "png" => "image/png",
        "gif" => "image/gif",
        "bmp" => "image/bmp",
        "tiff" => "image/tiff",
        "webp" => "image/webp",
        _ => "application/octet-stream",
    };
}

public string GetContentTypeByExtension(string extension) {
    return extension switch {
        "jpg" or "jpeg" => "image/jpeg",
        "png" => "image/png",
        "gif" => "image/gif",
        "bmp" => "image/bmp",
        "tiff" => "image/tiff",
        "webp" => "image/webp",
        _ => "application/octet-stream",
    };
}

 protected override Task<AuthenticateResult> HandleAuthenticateAsync() {
     if (!Request.Headers.TryGetValue(APIKeyOptions.Header, out var apiKey)) {
         return Task.FromResult(AuthenticateResult.Fail("No API Key provided"));
     }

     if (string.IsNullOrWhiteSpace(apiKey)) {
         return Task.FromResult(AuthenticateResult.Fail("API Key is null or empty"));
     }

     Logger.LogInformation($"API Key: {apiKey}");
     Logger.LogInformation($"Allowed Keys: {string.Join(", ", Options.Keys)}");
     if (!Options.Keys.Any(allowedKey => allowedKey == apiKey)) {
         return Task.FromResult(AuthenticateResult.Fail("Invalid API Key"));
     }

     return Task.FromResult(AuthenticateResult.Success(new AuthenticationTicket(new ClaimsPrincipal(new ClaimsIdentity([new Claim("APIKeyAuthorization", apiKey.ToString())], "APIKeyAuthorization")), Scheme.Name)));
 }

 protected override Task<AuthenticateResult> HandleAuthenticateAsync() {
     if (!Request.Headers.TryGetValue(APIKeyOptions.Header, out var apiKey)) {
         return Task.FromResult(AuthenticateResult.Fail("No API Key provided"));
     }

     if (string.IsNullOrWhiteSpace(apiKey)) {
         return Task.FromResult(AuthenticateResult.Fail("API Key is null or empty"));
     }

     Logger.LogInformation($"API Key: {apiKey}");
     Logger.LogInformation($"Allowed Keys: {string.Join(", ", Options.Keys)}");
     if (!Options.Keys.Any(allowedKey => allowedKey == apiKey)) {
         return Task.FromResult(AuthenticateResult.Fail("Invalid API Key"));
     }

     return Task.FromResult(AuthenticateResult.Success(new AuthenticationTicket(new ClaimsPrincipal(new ClaimsIdentity([new Claim("APIKeyAuthorization", apiKey.ToString())], "APIKeyAuthorization")), Scheme.Name)));
 }

fail: Microsoft.AspNetCore.Server.Kestrel[13]
      Connection id "0HN9V0PI2A4UV", Request id "0HN9V0PI2A4UV:00000001": An unhandled exception was thrown by the application.
      System.ArgumentNullException: Value cannot be null. (Parameter 'values')
         at System.String.JoinCore[T](ReadOnlySpan`1 separator, IEnumerable`1 values)
         at System.String.Join[T](String separator, IEnumerable`1 values)
         at Infected.Img.Authentication.APIKeyAuthenticationHandler.HandleAuthenticateAsync() in /home/container/Infected.Img/Authentication/BlazeAuthenticationHandler.cs:line 26
         at Microsoft.AspNetCore.Authentication.AuthenticationHandler`1.AuthenticateAsync()
         at Microsoft.AspNetCore.Authentication.AuthenticationService.AuthenticateAsync(HttpContext context, String scheme)
         at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
         at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext](IHttpApplication`1 application)

fail: Microsoft.AspNetCore.Server.Kestrel[13]
      Connection id "0HN9V0PI2A4UV", Request id "0HN9V0PI2A4UV:00000001": An unhandled exception was thrown by the application.
      System.ArgumentNullException: Value cannot be null. (Parameter 'values')
         at System.String.JoinCore[T](ReadOnlySpan`1 separator, IEnumerable`1 values)
         at System.String.Join[T](String separator, IEnumerable`1 values)
         at Infected.Img.Authentication.APIKeyAuthenticationHandler.HandleAuthenticateAsync() in /home/container/Infected.Img/Authentication/BlazeAuthenticationHandler.cs:line 26
         at Microsoft.AspNetCore.Authentication.AuthenticationHandler`1.AuthenticateAsync()
         at Microsoft.AspNetCore.Authentication.AuthenticationService.AuthenticateAsync(HttpContext context, String scheme)
         at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context)
         at Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http.HttpProtocol.ProcessRequests[TContext](IHttpApplication`1 application)