Error : Residuals of the static equations contains all NaN

Steady state
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IT RUNS !!!

Oh my god, I thought it would never work, I was getting really scared it would never work.

I literally could never have found this without your precious help !!!

Thank you so so so so much for your patience.

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Last question, how would I include a growth rate for the economy in my code ?

I would normally define a g parameter and do something like Y(1) = (1+g)*Y(0)

Since all my constraints are using the production function itself, I would have to define multiple variables and when I tried doing that, I ended up having too much or too many equations.

Is there a way to define growth in the model without timing the entire economy as I wrote as an exemple.

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You are using perturbation techniques. That requires well-defined steady state. For that reason, you cannot add growth in the model. You need to enter the detrended model equations. An example is https://github.com/JohannesPfeifer/DSGE_mod/blob/master/RBC_baseline/RBC_baseline.mod where the gamma_x capture growth.

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