Unable to render bar graph or pie chart on a callback

[AIMPED]

@nickhes

I do not think it makes any sense to add my python code in here, because it is very complex with a lot of variables. Let me know if it helps anyway!

You could try to reduce your code and create a minimal example, you can find more information concerning this here:

How to write a Minimal Reproducible Example (MRE)

Adding a minimal reproducible example to your questions will help attract community members to answer your question. The goal of writing a MRE is to allow other members of the community to run the code on their computers and “reproduce” the error, so that they can best help you. Please make sure that your MRE includes data and that the code is correctly pre-formatted. To preformat, copy and paste the code in your post and then click on </> (Preformatted text), as shown on the image: [pre-for…

This usually helps a lot and most of the time, the problem can be resolved.