I’m having an issue downloading attachments from HyperKitty. The download begins as expected, but never progresses. Eventually it times out. I imagine the browser is expecting data matching the content-length header, but never receives it. Inspecting the contents of the download file reveals (address varies): <memory at 0x7f148fcb9588> I’ve been able to work around the issue with the following patch: --- env/lib/python3.7/site-packages/hyperkitty/models/email.py.orig 2018-12-06 21:38:39.544448735 +0000 +++ env/lib/python3.7/site-packages/hyperkitty/models/email.py 2018-12-06 23:01:39.923239421 +0000 @@ -309,7 +309,7 @@ def get_content(self): folder = self._get_folder() if folder is None: - return self.content + return self.content.tobytes() filepath = os.path.join(folder, str(self.counter)) if not os.path.exists(filepath): logger.error("Could not find local attachment %s for email %s", I haven't been able to replicate the issue with the HyperKitty tests, presumably the issue is somewhere in the Django <-> uwsgi <-> nginx stack. My configs are based on mailman-suite and maxking/docker-mailman. I've tried stripping out all the performance tweaks from my uwsgi and nginx configs, but no change. Versions: HyperKitty 1.2.1 Postorius 1.2.3 Django 2.1.7 nginx 1.14.1 uwsgi 2.0.18 Python 3.7.2 Has anyone come across this before? Derek Lambert