synapse does not properly start
Installing and running synapse seems fine at first start, but running leads to a crash after a short while. I see about every minute the syslog-message
/usr/bin/python3, pid 49194, exited with return code 1
Child command line: /usr/bin/python3 -m synapse.app.homeserver --config-path=/etc/synapse/homeserver.yaml
Running the start command from the shell, I see the error:
MemoryError: Cannot allocate write+execute memory for ffi.callback(). You might be running on a system that prevents this. For more information, see https://cffi.readthedocs.io/en/latest/using.html#callbacks