upstream prematurely closed connection (uwsgi + nginx + django)

Question

I am trying to configure my django application on a new server. It works fine unless I try to pass GET parameters. I get the following errors.

uWSGI:

Answer 1

It's time for mysteries, kids!

The problem mentioned in the question was solved by hard-checking every project file. It turned out that some of them contained unexpected symbols, which used to make Django throw encoding errors, and, as a result, make uwsgi stop.

The mystery part is that the files had been last modified a long time before the problem occured. So how could it happen that they contain extra symbols? Nobody knows.

At least for now, we can say it's solved.