React to each event stopped triggering last night

Hi. My React to each event stopped working at 22:56 GMT last night, up until I manually hit "Save and Run" on the MATLAB analysis that it triggers at around 08.00 this morning. Then it resumed again. I made a change to the MATLAB analysis code at 22.55 which save successfully. So my problem is probably that it ran too frequently at 22.56. The issue is why it cannot resume automatically after this.