error in injector.py

[rajkotraja]

i am getting error in injector.py

Traceback (most recent call last):
File "/root/.local/bin/mitmdump", line 7, in
from mitmproxy.tools.main import mitmdump
File "/root/.local/lib/python3.5/site-packages/mitmproxy/tools/main.py", line 101
server: typing.Any = None
^
SyntaxError: invalid syntax

i am using Ubuntu 16.04