Unfortunately, the CanvasLMS log file wasn't retrieved by the bnsupport tool because it is too big. Can you check the last 100 lines using the commands below? What error messages are you getting?
sudo tail -n100 /opt/bitnami/apps/canvaslms/htdocs/log/production.log
We highly recommend you to check this error message with the CanvasLMS developers as they can give you better support on their product than we can.