ubuntu 18

Dragonfire not work,,

Traceback (most recent call last):
File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 583, in _build_master
ws.require(__requires__)
File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 900, in require
needed = self.resolve(parse_requirements(requirements))
File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 791, in resolve
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (SQLAlchemy 1.3.3 (/usr/local/lib/python3.6/dist-packages), Requirement.parse('SQLAlchemy==1.2.10'), {'dragonfire'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/bin/dragonfire", line 6, in
from pkg_resources import load_entry_point
File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 3241, in
@_call_aside
File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 3225, in _call_aside
f(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 3254, in _initialize_master_working_set
working_set = WorkingSet._build_master()
File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 585, in _build_master
return cls._build_from_requirements(__requires__)
File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 598, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/usr/local/lib/python3.6/dist-packages/pkg_resources/__init__.py", line 786, in resolve
raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'SQLAlchemy==1.2.10' distribution was not found and is required by dragonfire