# StartExternalSession with a Raspberry Pi Stretch running MMA v11.2?

GROUPS:
 Hey guys,I wondered if anyone had an issue with Raspberry Pi Stretch running MMA v11.2 in which calling StartExternalSession[<|"System"->"Python,"SessionProlog"->"import math"|>] yields an error accusing invalid option "SessionProlog".I've used this on MacOS and it works fine, but it is crashing on the Pi. I can't seem to upgrade it to v 11.3 to check is that is the issue.Anyone encountered this issue?
11 days ago
5 Replies
 Option SessionProlog was introduced in 11.3. It will be an invalid option for 11.2 Kernels. Hence the error.
11 days ago
 Thanks, Damanjit!Any idea when v 11.3 will be available to the Raspberry pi?