Job stuck after running job on master node

I recently updated my cryosparc to v4.2.1. It used to run smoothly. But after the update, I couldn’t start any job. It is always stuck at " Running job on master node hostname c113631" no matter what jobs I tried to run.

Welcome to the forum @Chengzh1983.
For what type of job is this screenshot?
Please can you post the output of the command
cryosparcm cli "get_scheduler_targets()"