Not related to the problem, but you have a critical issue if you ever did get this helicopter to fire up and try to fly it. It is a flybar. Please set all the P,I,D values in these params to zero and set the VFF values to at least .15 and make sure that at .15 you have full servo travel when moving the sticks
ATC_RAT_PIT_D,0.001
ATC_RAT_PIT_FILT,20
ATC_RAT_PIT_I,0.024
ATC_RAT_PIT_ILMI,0
ATC_RAT_PIT_IMAX,1
ATC_RAT_PIT_P,0.024
ATC_RAT_PIT_VFF,0.4445
ATC_RAT_RLL_D,0.001
ATC_RAT_RLL_FILT,20
ATC_RAT_RLL_I,0.024
ATC_RAT_RLL_ILMI,0
ATC_RAT_RLL_IMAX,1
ATC_RAT_RLL_P,0.024
ATC_RAT_RLL_VFF,0.4445
Right here is the issue with why your ESC won’t initialize. It looks like your RC likes to calibrate from ~1126 to ~1970 pwm. How did the min values on these get set to what they are? Is this what it actually got calibrated at?
RC3_MAX,1945
RC3_MIN,1004
RC3_REVERSED,0
RC3_TRIM,1013
RC8_MAX,1939
RC8_MIN,1002
RC8_REVERSED,0
RC8_TRIM,1005
And your SERVO8 min/max should be 1000 and 2000. How did these values get entered this way? This is not going to let your ESC initialize.
SERVO8_MAX,1939
SERVO8_MIN,1025
I would suggest setting the SERVO8 min/max properly, recalibrate the RC and try it again.