TraitError #317
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rogerrouse
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TraitError
#317
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This has been discussed here https://github.com/martinRenou/ipycanvas/issues/295 You can either downgrade to ipycanvas==12.1 or try to upgrade your Python version |
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In a jupyter-notebook instantiating a canvas results in a TraitError:
from ipycanvas import Canvas
can = Canvas()
TraitError: The '_canvas_manager' trait of a Canvas instance must be a _CanvasManager, but a value of class 'NoneType' (i.e. None) was specified.
Any ideas on how to fix this or what causes it?
Thanks
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