Problems when trying to calibrate Pixhawk ESC

I am using a t8fb bt model remote controller, and probably using ETF Company’s x6210 and Pixhawk to assemble it.
Trottle calibration completed. To calibrate ESC, I raised the throttle of the controller and turned it on, but originally, the LED should have flashed red and blue repeatedly for ESC calibration, but it quickly turned off, and even after that, only blue blinked. I didn’t have this problem when I used the F450 model, but now that I am assembling my second drone, I am at a loss as to how to solve it.

I’m looking for a great warrior who can solve this problem. 8ㅡ8
reference

What ESC’s are they? If standard PWM protocol units then follow the Semi-Automatic procedure here:
ESC’s