fix mypy

Author: giancarloromeo

mypy.ini

@@ -5,6 +5,7 @@ disallow_any_generics = False
 # disallow_untyped_defs: if True, it enforces things like `def __init__(self) -> CLASSNAME` or `def test_() -> None` which does not worth the effort
 disallow_untyped_defs = False
 follow_imports = silent
+follow_untyped_imports = True
 # ignore_missing_imports: setting this to True ignores issues from imported libraries, so do not set it!!
 ignore_missing_imports = False
 namespace_packages = True