My strategy is cyclic, why does the robot stop?

Why is my strategy that the looping robot will stop?

When the robot receives an abnormal signal from the exchange, it will first stop continuing to operate, so as not to cause greater problems, so when the robot has an abnormal condition, it will stoMy strategy is cyclic, why does the robot stop?

ANS: When the robot receives an abnormal signal from the exchange, it will stop operation first, so as not to cause more problems.