Brushless DC Motor Controller Error Code

Hi dear friends, I am receiving a 6 flash error code on my Brushless DC Driver (SKU: ATO-BLDC-C750) but I do not see a table in the spec sheet that outlines what this error code entails. Could you let me know what it means when the red LED flashes 6 times? Please refer to the image below. We don’t have much hooked up to it.
Thank you.

Mcilraith wrote:
Please double-check that the extension cord is connected correctly.

ATO wrote:
I double-checked that all the leads to the motor are correct. We ran it without the motor cables and got the same 6-flash error code. Please advise what to do next.

Mcilraith wrote:
Please connect the wires according to the wiring diagram we provide. The wire must be connected, and the controller will flash and alarm if the wire is removed. We guess that the cause of the problem is that you connected the extension cord, and the improper wiring caused the alarm. Try removing the extension cord and rewiring it according to the following wiring diagram.