Changwoo.org file uploaded to GCP storage
and it's have CORS issues, if file upload on web browser client
we have to configure CORS

GCP : Google Cloud Platform
CORS : Cross Origin Resource Sharing
gsutil : GCP storage util

cors.json

[
  {
    "origin": ["https://www.changwoo.org", "http://localhost:3000"],
    "responseHeader": ["Content-Type", "Content-Md5"],
    "method": ["PUT", "GET", "HEAD", "DELETE"],
    "maxAgeSeconds": 3600
  }
]

Bash
Change gs://XXXXXXX

curl https://sdk.cloud.google.com | bash
exec -l $SHELL
gcloud init

# CORS confirm
gsutil cors get gs://XXXXXXX

# CORS setting
gsutil cors set cors.json gs://XXXXXXX