Ask help for model solving

Dear all:
It is my first time to build a model.I can not understand some errors I met.
Could you help me find the problem? Thanks very much !

??? Error using ==> mldivide
Matrix dimensions must agree.

Error in ==> lnsrch1 at 64
alamin = tolx/test ;

Error in ==> solve1 at 127

Error in ==> dynare_solve at 126
bad_cond_flag, varargin{:});

Error in ==> steady_ at 120
[oo_.steady_state,check] = dynare_solve([M_.fname ‘_static’],…

Error in ==> steady at 54

Error in ==> imf at 283

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

I changed the the initial value of Pe and Pv to 0.
new errors emerged,

??? Error using ==> print_info at 52
One of the eigenvalues is close to 0/0 (the absolute value of numerator
and denominator is smaller than 1e-6)

Error in ==> check at 51
print_info(info, options_.noprint);

Error in ==> imf at 284

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