Fix shutdown error.
None type can be in skill list
@@ -38,6 +38,7 @@ class MockSkillsLoader(object):
def load_skills(self):
self.skills = load_skills(self.emitter, self.skills_root)
+ self.skills = [s for s in self.skills if s]
return self.emitter.emitter # kick out the underlying emitter
def unload_skills(self):
