Swagger TypeError: Failed to fetch

Question

I have problem when I call api for put and delete from swagger, error is: TypeError: Failed to fetch

Curl

curl -X DELETE "http://localhost:5000/api/Ad/2" -H "accept: application/json" -H "Authorization: Bearer MY_TOKEN"

From setup I had enable cors like this and put on begin of ConfigureService method:

services.AddCors(options => {
    options.AddPolicy(
        "AllowAll",
        builder => builder.AllowAnyOrigin()
                          .AllowAnyMethod()
                          .AllowAnyHeader()
                          .AllowCredentials()
    );
});

thus from Configure before anything is put it app.UseCors("AllowAll");

Why I'm not able to call delete method and put?

Update 1

Reagrds, Danijel

dont want to ruing your day, but it looks like a known issue: [github](https://github.com/swagger-api/swagger-ui/issues/3969) — Power Mouse, Jun 12 '19 at 19:27
@PowerMouse your not ruing my day, I found also, cors are enabled and problem still present. Maybe I had enabled wrong ? — Danijel Boksan, Jun 12 '19 at 19:30
What is the error message in the **Console** tab of dev tools? — Helen, Jun 12 '19 at 20:19
index.js:19 Could not find component JsonSchema_integer_int32 i @ index.js:19 :5000/api/Ad/2:1 Failed to load resource: net::ERR_BLOCKED_BY_CLIENT — Danijel Boksan, Jun 12 '19 at 20:47
Possible duplicate of [I am getting Failed to load resource: net::ERR\_BLOCKED\_BY\_CLIENT with Google chrome](https://stackoverflow.com/questions/22318119/i-am-getting-failed-to-load-resource-neterr-blocked-by-client-with-google-chr) — Helen, Jun 12 '19 at 21:29

score -1 · Answer 1 · answered Jun 12 '19 at 19:03

-1

Instead of app.UseCors("AllowAll") can you try [EnableCors("AllowAll")] on the controller endpoints? Also refer: How to enable CORS in ASP.NET Core

answered Jun 12 '19 at 19:03

Socratees Samipillai

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I had removed app.UseCors("AllowAll") and put [Route("api/[controller]")] [Authorize(Roles = "Admin,Member")] [EnableCors("AllowAll")] public class AdController : ControllerBase Problem still present – Danijel Boksan Jun 12 '19 at 19:22

Swagger TypeError: Failed to fetch

1 Answers1