Quote from: noallianceb

Can anyone do me a favor to tell the solution and make it well again?

"Again", was it working before?
What was the last version that you've used?

Quote from: noallianceb on March 21, 2024, 03:55:55 PM

-snip- That mentions unsupported and peers corruption.

You need to provide more information than just giving vague descriptions of the issue.
For starters, provide the last logs from "debug.log" file so me and other members could analyze the possible cause of the errors.
Just start from the last "2024-month-day Time Bitcoin Core version v26.0.0 (release build)" line to the last line and paste it between [code][/code] tags.

For now, based from those words, I suspect that the former is about the pop-up saying legacy wallets being deprecated in future versions which isn't an issue for now.
The latter may be a corruption of your "peers.dat" file which can be safely deleted while Bitcoin Core is closed.
It's based from nothing but your "peers corruption" description, so getting the log is still recommended if it didn't work.

Both "debug.log" and "peers.dat" are both in your bitcoin data directory.
Default location in: en.bitcoin.it/wiki/Data_directory#Default_Location; otherwise, in the custom datadir that you've set.