This is on a Pixel5a which has now become a house media control (play music in the house via BT,) and quick internet queries.
The reason for factory data reset was to practically erase all the data on the phone and start anew without all the unused apps and files that had been installed over the years, freeing more space for local music files.
The phone was working fine prior to performing the Factory Data Reset. During the process I got these error messages (see linked img)
After rebooting the phone, everything is like Day 1 (as I one would expect). Running the Factory Data Reset a second time yields the same error messages again. Phone boots up fine, it is like Day1, wifi works, can install accrescent/apps, no problem. Speakers works, blutooth works, etc.
What exactly do these error message mean?
I see ext4, Titant, etc
Is this an imminent hardware failure? Data Corruption? Can this be fixed by reinstalling GOS?

https://i.postimg.cc/hj9W8FxT/sfdgsfgsfg.jpg