Traceback (most recent call last):


 "C:\Users\adnan\AppData\Local\Programs\Python\Python38-32\lib\site-packages\tornado\ioloop.py", line 907, in _run

return self.callback()


 "C:\Users\adnan\AppData\Local\Programs\Python\Python38-32\lib\site-packages\distributed\nanny.py", line 414, in memory_monitor

process = self.process.process
AttributeError: 'NoneType' object has no attribute 'process'

Traceback (most recent call last):


 "C:\Python36\lib\site-packages\pyface\ui\qt4\timer\timer.py", line 51, in Notify

self.callable(*self.args, **self.kw_args)


 "C:\Python36\lib\site-packages\mayavi\tools\animator.py", line 224, in _step

self._next()


 "D:/Projects/py3_tutorials/misc/mayavi_animation_fuss.py", line 22, in anim

s=np.arange(steps_count+1))


 "C:\Python36\lib\site-packages\mayavi\tools\sources.py", line 106, in set

self.update()


 "C:\Python36\lib\site-packages\mayavi\tools\sources.py", line 74, in update

(self.scalars is not None or self.vectors is not None):
AttributeError: 'MLineSource' object has no attribute 'vectors'
