Issues with Deploying Dash App Using Gunicorn

1

Hello everyone,

I’m currently facing some challenges while deploying my Dash app using Gunicorn, and I’m hoping to get some guidance from the community.

I’ve built a Dash app that interacts with a MongoDB database and I’m trying to deploy it using Gunicorn. The app runs without any issues locally, but when I try to run it with Gunicorn, I encounter the following error:

Traceback (most recent call last):
  File "gunicorn", line 8, in <module>
    sys.exit(run())

gunicorn.errors.AppImportError: Failed to find attribute ‘app’ in ‘app’.

I have a Flask server with a Dash app and I’ve set up a Blueprint for a cloud API that interacts with a MongoDB database. The app runs successfully when using app.run_server(debug=True) locally, but the issue arises when trying to deploy it with Gunicorn.

# Create Flask app and Dash app
server = Flask(__name__)
app = dash. Dash(__name__, server=server)

# Define cloud API Blueprint
cloud_api_bp = Blueprint('cloud_api', __name__)
2

Fixed it.

Instead of using gunicorn Just used. python3 app.py

On the start script.
Worked without any issues.

1 Like
3

Hi there,

Glad you got the issue resolved! Thanks for letting us know.

Regards,
Mike

Render Support Engineer, MT (UTC-7)

4

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