这是我跑空间杜宾模型的时候 跑不了 请问该怎么解决啊
. xsmle Y X1 X2 X3 a1 a2 a3 a4 , model(sdm) wmat(W) type(both) nolog effects re
Warning: Option type(both) will be ignored
Warning: All regressors will be spatially lagged

initial values not feasible
r(1400);

. xsmle Y X1 X2 X3 a1 a2 a3 a4, model(sdm) wmat(W) type(time) nolog effects fe
Warning: All regressors will be spatially lagged

initial values not feasible
r(1400);

. xsmle  Y X1 X2 X3 a1 a2 a3 a4, model(sdm) wmat(W) type(ind) nolog effects fe
Warning: All regressors will be spatially lagged

initial values not feasible
r(1400);

. xsmle  Y X1 X2 X3 a1 a2 a3 a4, model(sdm) wmat(W) type(both) nolog effects fe
Warning: All regressors will be spatially lagged

initial values not feasible
r(1400);