Frontend on Vercel keeps getting cors error but only for endpoints with query params in it?

[silent plank]

https://retrobroker.com/

I have on my backend set

STORE_CORS=https://retrobroker.com

backend is hosted on docker with nginx(swag) reverse proxy

https://api.retrobroker.com

the admin with the same config is working as suppose to without cors errors..

I have deleted from next frontend the api folder and disabled productModule.

Can anyone help me?

Frontend on Vercel keeps getting cors error but only for endpoints with query params in it?