Problem when etimating using Dynare

dear all,
I am using dynare to estimate an economic model with fiscal policy but i met a problem as follow:
Error in computing likelihood for initial parameter values
??? Error using ==> print_info at 45
Blanchard Kahn conditions are not satisfied: indeterminacy due to rank failure

Error in ==> initial_estimation_checks at 101
print_info(info, options_.noprint)

Error in ==> dynare_estimation_1 at 122

Error in ==> dynare_estimation at 62

Error in ==> lwmatlap2 at 190

Error in ==> dynare at 120
evalin(‘base’,fname) ;

I don’t know what it means and how can i fix it?
lwmatlap2.mod (1.61 KB)