Error when uploading CSV file

A clear and concise description of what the bug is.

Expected results

CSV file uploaded into database

Actual results

Got error when uploading CSV file

Screenshots

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 2464, in __call__
    return self.wsgi_app(environ, start_response)
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 2450, in wsgi_app
    response = self.handle_exception(e)
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1867, in handle_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.6/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 2447, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1952, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1821, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.6/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1950, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1936, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/usr/local/lib/python3.6/site-packages/flask_appbuilder/security/decorators.py", line 109, in wraps
    return f(self, *args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/flask_appbuilder/views.py", line 94, in this_form_post
    response = self.form_post(form)
  File "/app/superset/views/database/views.py", line 141, in form_post
    delete=False,
  File "/usr/local/lib/python3.6/tempfile.py", line 551, in NamedTemporaryFile
    (fd, name) = _mkstemp_inner(dir, prefix, suffix, flags, output_type)
  File "/usr/local/lib/python3.6/tempfile.py", line 262, in _mkstemp_inner
    fd = _os.open(file, flags, 0o600)
FileNotFoundError: [Errno 2] No such file or directory: '/app/superset/app/static/uploads/tmpgzxvi893.csv'

How to reproduce the bug

1. Enable CSV upload
2. Upload CSV file

Environment

(please complete the following information):

• First installation using Docker
• superset version: master
• python version: based on master branch
• node.js version: based on master branch
• npm version: based on master branch

Checklist

Make sure these boxes are checked before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven’t found one similar.

Additional context

Add any other context about the problem here.

[rayzor65]

I managed to get past this issue by creating a new folder in my dockerfile (RUN mkdir /csvs) then updating superset_config.py

# superset_config.py
UPLOAD_FOLDER = "/csvs/"

[reenarosid]

Cause: Insufficient privilege, which doesn’t allow a file creation in the Docker container environment.

Fix: giving it a root privilege

Please add user: root:root in your docker-compose.yml to fix the issue.

superset: env_file: docker/.env build: *superset-build container_name: superset_app command: [“flask”, “run”, “-p”, “8088”, “–with-threads”, “–reload”, “–debugger”, “–host=0.0.0.0”] restart: unless-stopped ports: - 8088:8088 user: root:root # add this change
depends_on: *superset-depends-on volumes: *superset-volumes