I am quite new to Dynare and would really appreciate it if you could take a look at this code and let me know what I am missing. When I run the code, I get an error saying
Error using print_info (line 83)
Impossible to find the steady state. Either the model
doesn’t have a steady state, there are an infinity of steady
states, or the guess values are too far from the solution

Error in steady (line 104)
print_info(info,options_.noprint, options_);

Thank you very much, I have modified the exogenous process for A according to your comments, Obtained the steady state value of the model，Copy6myselfmodel.mod (5.8 KB) and there are new problems. I hope you can help solve it, thank you!

Error using print_info (line 54)
One of the eigenvalues is close to 0/0 (the absolute value of numerator and denominator is
smaller than 1e-06!
If you believe that the model has a unique solution you can try to reduce the value of
qz_zero_threshold.

Error in check (line 76)
print_info(info, 0, options);

Error in Copy6myselfmodel (line 492)
oo_.dr.eigval = check(M_,options_,oo_);

MODEL_DIAGNOSTICS: The Jacobian of the static model is singular
MODEL_DIAGNOSTICS: there is 1 colinear relationships between the variables and the equations
Colinear variables:
lamf
Y
C
N
K
I
w
r
Rd
m
R
RL
RCB
Ksibar
x1
x2
dp
pi
pistar
mc
L
Leverage
n
Colinear equations
17 18 19 21 22
MODEL_DIAGNOSTICS: The presence of a singularity problem typically indicates that there is one
MODEL_DIAGNOSTICS: redundant equation entered in the model block, while another non-redundant equation
MODEL_DIAGNOSTICS: is missing. The problem often derives from Walras Law.