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My web_app.py has the following content (only most relevant information included):

app = Flask(__name__) socketio = SocketIO(app, ping_timeout=1200) if __name__ == "__main__": port = int(os.environ.get('PORT', 5000)) socketio.run(app)

My app.yaml is:

runtime: python env: flex entrypoint: gunicorn -b :$PORT web_app:socketio runtime_config: python_version: 3.6 manual_scaling: instances: 1 resources: cpu: 1 memory_gb: 0.5 disk_size_gb: 10 skip_files: - output/ - data/ - .idea/ - env/

When I run gcloud app deploy I get the following error:

Application object must be callable.

Please help.

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1 Answer 1

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In your app.yaml file, when running gunicorn, you have to indicate the name of the flask class of your web app. Here, under deployment, you can find some different options to deploy a Flask-SocketIO server. You should replace entrypoint: gunicorn -b :$PORT web_app:socketio for entrypoint: gunicorn -b :$PORT web_app:app

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