Django: BlockingIOError: [Errno 11] write could not complete without blocking

Question

I have django project:

In have a view which updates some values

In the view i have few print commands

I am trying to run the same url using curl multiple times

like eg:

curl "127.0.0.1:8000/update?var=somevalue001"
curl "127.0.0.1:8000/update?var=somevalue002"
.
.
.
.
.
.
curl "127.0.0.1:8000/update?var=somevalue100"

But after 40 times running it starts giving the error

BlockingIOError: [Errno 11] write could not complete without blocking

How to avoid it