minio.error.InvalidXMLError while performing fput_object

I am using the Minio SDK for Python. I am performing the method fput_object and I keep running into the error: InvalidXMLError: message: "Error" XML is not parsable. Message: mismatched tag: line 6, column 2.

The following code is being used:

minioClient = Minio(minio_server_url, access_key=access_key, secret_key=secret_key, secure=True)

result = minioClient.fput_object(bucket_name, filename, content_file, content_type='application/csv')

print(result)

The line it errors on is: result = minioClient.fput_object(...)

The content_file is the file path to the file I want to upload to my bucket. This has worked with other files, but on the file I am trying it errors out. The contents of the file is just CSV data - about 4.5MB worth. The files that worked are probably only about 2MB worth of data.

The full traceback is here:

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/minio/error.py", line 175, in _set_error_response_with_body
    root = cElementTree.fromstring(self._response.data)
  File "/usr/local/lib/python3.7/xml/etree/ElementTree.py", line 1315, in XML
    parser.feed(text)
xml.etree.ElementTree.ParseError: mismatched tag: line 6, column 2

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/minio/api.py", line 632, in fput_object
    progress, part_size)
  File "/usr/local/lib/python3.7/site-packages/minio/api.py", line 899, in put_object
    progress=progress)
  File "/usr/local/lib/python3.7/site-packages/minio/api.py", line 1618, in _do_put_object
    content_sha256=sha256_hex
  File "/usr/local/lib/python3.7/site-packages/minio/api.py", line 1967, in _url_open
    object_name).get_exception()
  File "/usr/local/lib/python3.7/site-packages/minio/error.py", line 137, in __init__
    self._handle_error_response(bucket_name)
  File "/usr/local/lib/python3.7/site-packages/minio/error.py", line 160, in _handle_error_response
    self._set_error_response_with_body(bucket_name)
  File "/usr/local/lib/python3.7/site-packages/minio/error.py", line 178, in _set_error_response_with_body
    'Message: {0}'.format(error))
minio.error.InvalidXMLError: InvalidXMLError: message: "Error" XML is not parsable. Message: mismatched tag: line 6, column 2

[harshavardhana]

Your nginx ingress should have the following settings https://docs.minio.io/docs/setup-nginx-proxy-with-minio.html

[jbmcfarlin31]

@kannappanr Looks like this was an issue with my ingress rule. My Minio instance was deployed as a container inside a kubernetes cluster. The ingress controller was throttling the request size, so by setting the client_max_body_size on my ingress rule it worked.

For those who don’t know kubernetes, you would set that via an annotation field on the ingress rule like so:

nginx.ingress.kubernetes.io/proxy-body-size: "0"

I am testing some more just to be sure, before closing this ticket.