I am a relative newbie at Plotly Dash Python programming. I am trying o get to grips with the methodology of using the Dash Cytoscape component. What I want to do is to be able to [1] Define an initial zero node or null network, then [2] generate the network (say) from a dataframe within a callback function. Very few of the example codes I have found show how to update components within a callback. I did find the example called usage-reset-button.py here:

I want to create a plot in Plotly with 2 features:

I have this button:

Here is the minimial reproduceable example code for my multipage app
the problem is that i get 5 of the errors shown below on the page load and even more when i click on the buttons. the ids are clearly in the layout, they are not produced by some function.