Shiny App Reactivity Issue and Scoping Issue - Solving the Problem with Reactive Programming in Shiny Apps

Resolving the "Error : Mapping should be created with aes() or aes_" Reactive ggplot2 Error

This is a Shiny app written in R that allows users to interact with a simple simulation model. The app has two interactive plots: one displaying the system behavior over time, and another showing the effect of changing model parameters on system behavior.