fix bug: set scheduler misfire_grace_time=10

server.py

@@ -56,7 +56,7 @@ async def add_task(task_args):
     trigger = IntervalTrigger(seconds=interval)
     scheduler.add_job(task_handler, trigger, args=[task_args], 
                       id=task_name, replace_existing=True,
-                      max_instances=3)
+                      max_instances=3, misfire_grace_time=10)
 
 async def list_task():
     jobs = scheduler.get_jobs()