Error in update(model$formula, 0 ~ .) : object 'model' not found

General
1

Hi! I am new to R and was try to use the predict formula but I just keep getting the following message
Error in update(model$formula, 0 ~ .) : object 'model' not found

can please someone tell me what it is

2

do you have a model from which to predict ?

3

yes and i was using the following code

d_base <- cbind(d_base, as.vector(predict.share(model2, d_base)))

4

I use R for modelling very often, and have used predict thousands of times...
I've never seen predict.share before. Is it from some niche package ?

5

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