got it - typically there'd be a STEP_SUCCESS event after each solid completes. what that tells me is that your step is likely hanging after that last log in the line, or the pod that runs that step could have crashed. If it's that, we have some upcoming monitoring features that would help identify that in dagit.
If this is using the K8sRunLauncher i'd check out the pod for that run and see if it's still running or if there are any clues there.