installer information on recovery server is damaged

If you get a corrupted message...

Naw, it's not damaged, it's just that you have an old copy already in Applications, there are 2 cures...

Disconnect from the Internet & set the Date back to 2014, then you can run the Install MacsOS ******* App in Applications, so expired Certificates are not expired.

Trash the Install MacsOS *******.app in Applications then restart, a new copy more recent version can be downloaded.

Moh315 Said:

"installer information on recovery server is damaged: don’t know what happened to get this error. i’m trying to reset this mac to be able to give it to a family member."

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Reinstall the macOS:

If the macOS is still installed, you might want to reinstall the macOS, and then try this once more. Ultimately, though, this is the site to refer to when handing over a Mac: What to do Before you Sell, Give Away, or Trade in your Mac - Apple Support