Safety check empty eject queue before clearing double eject

Author: avanwinkle

mpf/devices/ball_device/outgoing_balls_handler.py

@@ -433,12 +433,11 @@ async def _eject_ball(self, eject_request: OutgoingBall, eject_try: int) -> bool
                 # Post that the ball is lost
                 await self.ball_device.lost_idle_ball()
                 # Cancel the eject queue for the lost ball
-                self.info_log("How many ejects are requested? %s", self.ball_device.requested_balls)
-                self.info_log("Playfield ejects requested? %s", self.machine.playfields.playfield.num_balls_requested)
                 for _ in range(0, old_balls - new_balls):
-                    self.info_log("Cancelling one queued request")
-                    self._eject_queue.get_nowait()
-                    self._eject_queue.task_done()
+                    self.info_log("Cancelling a queued eject request")
+                    if not self._eject_queue.empty():
+                        self._eject_queue.get_nowait()
+                        self._eject_queue.task_done()
                 self.info_log("Necessary queue requests are completed. Updating ball count to %s." % new_balls)
                 self.ball_device.ball_count_handler._set_ball_count(new_balls)