Possible bug - Software issue detected

I was looking to restart my phone (S21 Ultra) the other day and for some unknown reason my phone was stuck in a reboot loop where it kept turning on and off and I had absolutely no control over it and couldn't stop the phone from restarts. I've tried all thei options but none worked. After about 15 to 20 mins of reboot loop, the phone finally fired up and since then I keep getting the below message you see on the screenshot shared below everytime my phone wakes up from idle. Does anyone had this issue and this particular message pop up? I've tried wipe partition cache, sent feedback along with system logs.

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