I am trying to run my regressions, but it always Shows the error:
convergence not achieved
convergence not achieved
model did not converge on m=1
r(430);


My Regression specification:

foreach yvar of local zeroinfl {


*Model 2
foreach xvar of local stress {
mi estimate, cmdok irr: zip `yvar' `xvar' partner_`xvar' `controls', inf(`yvar') vuong

Anyone knows how to solve it?
Thank you