Civi Event scheduled reminders error - missing date causes DB syntax error
Problem a result of a reminder that has no sending date.  (see attached image) This error results in a syntax error that prevents all subsequent reminders from being sent.  Solution is to add date or disable reminder with no date.   (ConfigAndLog error messages show the ID for the reminder that has the error.)

Will report as a bug with recommendation that reminder cannot be saved without a date.