{"readyState":0,"status":0,"statusText":"error"} even though I put my api key and api secret.

[Creativeguru97]

HI, I registered and got my free version of api key and api secret.

I followed this read me and tried the face detection. But even though I put my api key and api secret at line4 and 5 in the common.js, the demo doesn't work with my upload photo.

I always got error says
[Error] Origin http://127.0.0.1:3000 is not allowed by Access-Control-Allow-Origin.
[Error] XMLHttpRequest cannot load https://api-cn.faceplusplus.com/facepp/v3/detect due to access control checks.
[Error] Failed to load resource: Origin http://127.0.0.1:3000 is not allowed by Access-Control-Allow-Origin. (detect, line 0)

or just output function failed()

Is this because my plan is free type? Or I missed something else?
Thanks in advance:))