ATT.ErrYaw is always 1.Will this have any impact?

I saw in the document that the ErrYaw value should be in the range of 0-1, but my log shows that it is always 1. What is the reason? Will this have any impact?
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Can you send the complete dataflash log?

@Mustafa_Gokce i have upload my dataflash log.thanks for help.