EKFINAV FAILSAFE at Arming..again and again then good

Hey guys I have a problem…not a serious one but one that confuses me…which isn’t hard to do.
Anyway I flew yesterday and the drone flew great. But on the second flight when I armed the bird. I saw teh Status LED flash yellow and red. So I disarmed waited a few seconds and armed again… Again with the Yellow and red blink. This happens maybe three times then the bird arms and off we go. But it only happens the second I arm the bird.
I was wondering if anyone had any ideas as to why this occurs.

19:00:26 16 2 EKF CHECK: EKF CHECK BAD VARIANCE
19:00:26 17 1 EKFINAV FAILSAFE: OCCURED OR FAILED TO INITILIASE
19:00:29 17 0 EKFINAV FAILSAFE: ERROR RESOLVED/CLEARED
19:00:39 16 2 EKF CHECK: EKF CHECK BAD VARIANCE
19:00:39 17 1 EKFINAV FAILSAFE: OCCURED OR FAILED TO INITILIASE
19:00:42 17 0 EKFINAV FAILSAFE: ERROR RESOLVED/CLEARED

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