AnimationMixer.uncacheRoot（）error cry for help！

Questions
1

_TCKQ{H@XUL8LRK$}6)6ROY

Why did this error occur?

2

GONJ6E2XTLJ2CWA}`66HNKW
GONJ6E2XTLJ2CWA}`66HNKW692×463 270 KB

M){{UQQ}D59))Q)S@AB69Q
M){{UQQ}D59))Q)S@AB69Q788×333 17.3 KB

3

Any chances to demonstrate the issue with a live example?