Null check operator used on a null value in _returnConnection

[aggeloskoutanis]

Hello, everyone. I am facing the following problem:

Sometimes I get this error:

_TypeError
Null check operator used on a null value

http_impl.dart in _HttpClient._returnConnection at line 2857
http_impl.dart in _HttpClientConnection.send.<fn>.<fn>.<fn> at line 2204
zone.dart in _rootRunUnary at line 1407

Can't tell what is wrong by reading this. Any suggestions on where to look?

I have the HTTP: 0.13.5

Flutter 3.10.6 • channel stable • https://github.com/flutter/flutter.git Framework • revision f468f3366c (4 months ago) • 2023-07-12 15:19:05 -0700 Engine • revision cdbeda788a Tools • Dart 3.0.6 • DevTools 2.23.1