Transaction managed block ended with pending COMMIT/ROLLBACK

After getting a similar issue and wasting hours on it I figured out how to debug this situation.

For some reason the @transaction.commit_manually decorator silences exceptions that occur in the function.

Temporarily remove the decorator from your function, you'll now see the exception, fix it and put the decorator back!

I had the same problem. The only solution I found was to use a try/finally clause to ensure a commit happens after the render.

@transaction.commit_manually
def xyz(request):
    committed = False
    try:
        if ABC:
            success = something()

            if success:
                status = "success"
                transaction.commit()
                committed = True

            else:
                status = "dataerrors"
                transaction.rollback()
                committed = True
        else:
            status = "uploadproblem"
            transaction.rollback()
            committed = True

        return render(request, "template.html", {
            'status': status,
        })
    finally:
        if not committed:
            transaction.rollback() # or .commit() depending on your error-handling logic

Makes no sense, but it worked for me.