Latest optik fails with "SyntaxError: annotated name 'glob_fuzzing_result' can't be global"

[ggrieco-tob]

Traceback (most recent call last):
  File "/home/g/.local/bin/hybrid-echidna", line 5, in <module>
    from optik.echidna.__main__ import main
  File "/home/g/.local/lib/python3.7/site-packages/optik/echidna/__init__.py", line 1, in <module>
    from .__main__ import run_hybrid_echidna
  File "/home/g/.local/lib/python3.7/site-packages/optik/echidna/__main__.py", line 545
    glob_fuzzing_result: Optional[FuzzingResult] = None
    ^
SyntaxError: annotated name 'glob_fuzzing_result' can't be global