AttributeError: 'map' object has no attribute 'count'

[gabrielfsousa]

with python 3.8

Exception in thread Thread-3:
Traceback (most recent call last):
File "/usr/lib/python3.8/threading.py", line 932, in _bootstrap_inner
self.run()
File "/usr/local/lib/python3.8/site-packages/powerline_shell/segments/jobs.py", line 16, in run
self.num_jobs = output.count(os.getppid()) - 1
AttributeError: 'map' object has no attribute 'count'