Launching Lutris Gives Error After Installation

I just installed lutris on ubuntu 18.04 but whenever I try to run it, it gives this error:

Traceback (most recent call last):
  File "/usr/local/bin/lutris", line 4, in <module>
    __import__('pkg_resources').run_script('lutris==0.5.6', 'lutris')
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 658, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 1429, in run_script
    .format(**locals()),
pkg_resources.ResolutionError: Script 'scripts/lutris' not found in metadata at '/usr/lib/python3/dist-packages/lutris-0.5.6.egg-info'

How can I fix this?