我在运行有关样本选择分位数回归的代码时出现conformability error an error occurred when bootstrap executed myqregsel
，是怎么回事呀。有哪位大神可以帮助解答吗，跪求！！！
webuse womenwk,clear
qregsel wage educ age,selec(married children educ age) quantile(.1 .5 .9)
ereturn list
set seed 2
webuse womenwk,clear
global wage_eqn wage educ age
global seleqn married children educ age
capture program drop myqregsel
program myqregsel,eclass
version 16
tempname bb
quietly qregsel $wage_eqn,select($seleqn) quantile(.1 .5 .9)
local colnames : colfullnames e(coefs)
local rownames : rowfullnames e(coefs)
foreach lname1 of local colnames {
foreach lname2 of local rownames{
local names ="`names' `lname1':`lname2'"
                             }
}

mata: st_matrix("`bb'",vec(st_matrix("e(coefs)")))
matrix `bb'=`bb',e(rho)
mat colnames `bb'=`names' rho:rho
ereturn post `bb'
ereturn local cmd="bootstrap"
end

bootstrap _b ,reps(99) nowarn: myqregsel