System.AsyncException: trigger must be associated with a job detail

System.AsyncException: trigger must be associated with a job detail

I am writing test class for schedule and bump into this exception.The reason is , make sure no space at jobName. The class can be call by :

System.schedule(jobName, cronExpression, schedulableClass) ;

Notice this will throw the exception . 'Opp_Update_Schedule 5.00 '

      // Schedule the test job
      String jobId = System.schedule('Opp_Update_Schedule 5.00 ',
                        CRON_EXP_DAY, 
                        new Opportunity_Update_Schedule(100));

This will not throw exception :'Opp_Update_Schedule'. Remove space, I haven't test with special character (you might want to test) but I remove it anyway and it run.

      // Schedule the test job
      String jobId = System.schedule('Opp_Update_Schedule',
                        CRON_EXP_DAY, 
                        new Opportunity_Update_Schedule(100));

Have a nice day.