Flyaway because of no receiver loss failsafe

I guess you found it. Retrieve the dataflash log from this flight and post it here for eval.

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RTL mode plane went wrong and flew away and modes keeps on switching without toggle any switch. anyone please help me what is really the problem? here is the log.

[https://drive.google.com/file/d/1Q5m1myLK7EH8IwLhkJLPb5JylrRlrWvP/view?usp=sharing ]