Jupyter REST API '_xsrf' argument missing from POST

I am trying write a tool to upload batch files to a remote jupyter server of which I don't have SSH access. After some digging I wrote up a function in Python which uses Requests package to send PUT request to the jupyter server.

However, no matter I use token or password for spinning up the jupyter server, it always give me an error code of 403 with '_xsrf' argument missing from POST.

Below is my function:
```
def jupyter_upload(token, filePath, resourceDstPath, jupyterUrl='http://localhost:8888'):
"""
Uploads File to Jupyter Notebook Server
----------------------------------------
:param token:
The authorization token issued by Jupyter for authentification
(enabled by default as of version 4.3.0)
:param filePath:
The file path to the local content to be uploaded

:param resourceDstPath:
The path where resource should be placed.
The destination directory must exist.

:param jupyterUrl:
The url to the jupyter server. Default value is typical localhost installation.

:return: server response

"""
# format destination paths
dstPath = urllib.parse.quote(resourceDstPath)
# combine the jupyter url with the destination path
dstUrl = '%s/api/contents/%s' % (jupyterUrl, dstPath)
# not sure what is this doing
fileName = filePath[1 + filePath.rfind(os.sep):]
# maybe need to change headers to password
headers = {}
headers['Authorization'] = 'token '+ token
with open(filePath, 'rb') as myfile:
data=myfile.read()
b64data=base64.encodebytes(data)
body = json.dumps({
'content':b64data.decode("utf-8"),
'name': fileName,
'path': resourceDstPath,
'format': 'base64',
'type':'file'
})
return requests.put(dstUrl, data=body, headers=headers, verify=True)```