Help with this error: Error in eval(YVAR, Environment(formula), globalenv()) : object 'Growth' not found

Okay, I was hoping it was that easy.

We are going to need a lot more information. Basically we need enough code for a reproducible example ,or reprex (otherwise know as a minimal working example and a sample of your data.

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A handy way to supply some sample data is the dput() function. In the case of a large dataset something like dput(head(mydata, 100)) should supply the data we need. Just do dput(mydata) where mydata is your data. Copy the output and paste it here.