I am getting this error on running Flytsim and it is not launching

#1

File “/usr/local/lib/python2.7/dist-packages/tornado/wsgi.py”, line 51
def to_wsgi_str(s: bytes) -> str:
^
SyntaxError: invalid syntax
[flytsim/rostful-9] process has died [pid 4359, exit code 1, cmd /flyt/flytos/flytcore/lib/rostful/devserver -h 0.0.0.0 -p 80 -s tornado ~connections_list:=/rocon/connection_cache/list ~connections_diff:=/rocon/connection_cache/diff __name:=rostful __log:=/home/akhil/.ros/log/75c8adbe-b217-11e9-ab73-00c2c65fa87f/flytsim-rostful-9.log].
log file: /home/akhil/.ros/log/75c8adbe-b217-11e9-ab73-00c2c65fa87f/flytsim-rostful-9*.log

#2

Are you running Docker FlytSim or native ? I would suggest to use Docker instead of Native installation.
Did you update any packages within the docker?