Motor Keeps beeping when trying to run RC Brushless motor

I followed this tutorial:


My code is copy pasted with the only modifications being the data fields.
I wired it up exactly like the tutorial. However, when I plug in the motor to the ESC and battery, it starts beeping, about 3-4 times second, without stopping. I have tried putting the slider on Ubidots to 0, to 100, nothing works.