Google Storage ArgumentException when setting CORS config

Question

Following Google docs, when using GoogleCloud Storage console:

mysef@myproject:~$ cat cors-json-file.json 
[ 
  {
    "origin": ["*"],
    "method": ["GET"],
    "maxAgeSeconds": 3600
  } 
]

then I get the following error:

myself@myproject:~$ gsutil cors set cors-json-file.json gs://mybucket
Setting CORS on gs://mybucket/...
ArgumentException: JSON CORS data could not be loaded from: [ 
  {
    "origin": ["*"],
    "method": ["GET"],
    "maxAgeSeconds": 3600
  } 
]

same error when I remove "method", "maxAgeSeconds" or add "responseHeader".

Answer 1

after so many tries, I ended up with modifing json file to:

$ cat cors-json-file.json 
[{
    "origin": ["*"],
    "method": ["GET"],
    "maxAgeSeconds": 3600
}]

and... it worked! Note that example from Google documentation is my first case (with [{ on 2 lines)

Answer 2

I had the same problem and it was caused by the type of quotes used. By opening the json-file in a plain text editor and change the quote to standard ones fixed the problem.