uwsgi + nginx + flask: upstream prematurely closed

Question

I created an endpoint on my flask which generates a spreadsheet from a database query (remote db) and then sends it as a download in the browser. Flask doesn\'t throw any er

Answer 1

Replace uwsgi_pass 0.0.0.0:5002; with uwsgi_pass 127.0.0.1:5002; or better use unix sockets.