What is wrong with the mod file

Stochastic simulations
1

I am a beginner in Dynare
please, can somebody help me finding what is wrong with the attached mod file,
example.mod (5.04 KB)
Article complet final.pdf (124 KB)

2

model_diagnostics says:

[quote]MODEL_DIAGNOSTICS: The following endogenous variables aren’t present at the current period in the model:
wt
kt [/quote]