Convergence of variational inference

I run a stan model under cmdstanr using variational inference. And I set the tol_rel_obj as 0.0002 as one way to detect the convergence, and max number of iteration is 50,000. Then I notice that some times I can get the log like the figure below

Based on the log, it has not touched the max number of iteration, so it should converge. But the log says "May be diverging … ".

My question is if this mode is convergent or not? What’s the meaning of “May be diverging”?