Hi, and welcome!
Please see the FAQ: What's a reproducible example (`reprex`) and how do I do one? Using a reprex, complete with representative data will attract quicker and more answers.
The two key elements of a reprex are
- It can be copied into an
Rsession - It will only run if fed the
data
Helping to evaluate the model can't be done without the data. Could you edit to include a full reprex? Thanks.