CORS error on docs.jsonld

API Platform version(s) affected:“@api-platform/admin”: “^1.0.2”

Description
It’s able to access /api route and retrieve info but fails to access route /api/docs.jsonld throwing CORS error.

How to reproduce
Full code in this repository, but in summary:

The API is running at PHP serve php -S 127.0.0.1:8001 -t public, while the admin is running on http://localhost:3000/

/config/packages/nelmio_cors.yaml

 nelmio_cors:
defaults:
    origin_regex: true
    allow_origin: ['^https?://localhost:[0-9]+.*|127.0.0.1(:[0-9]+)?']
    allow_methods: ['GET', 'OPTIONS', 'POST', 'PUT', 'PATCH', 'DELETE']
    allow_headers: ['Content-Type', 'Authorization']
    expose_headers: ['Content-Disposition','Link','X-Total-Count']
    max_age: 3600
paths:
    '^/': ~

Possible Solution

Additional Context
This is the output of the /api call, than happens immediately before calling /api/docs.jsonld

These are the headers for the /api/docs.jsonld request:

The full error output on console:

[BernardA]

My last attempt was changing the server. I was using the PHP server as php -S 127.0.0.1:8001 -t public. I installed the Symfony binary with curl -sS https://get.symfony.com/cli/installer | bash and finally run symfony server:start.

It works fine now. Not sure what the problem is though. I would suggest your docs to advise not to user the PHP server. That would save people a lot of pain.

[baspeeters]

I have the same issue, except I’m not even using the admin module, I’m just trying to generate client files for the API Platform Client Generator.

Regardless, @BernardA’s solution worked for me, thanks!