OS issues
macOS could not be installed on your computer
The operation couldn’t be completed .(com.apple .osinstall error-1.)
MacBook Air 11″, macOS 10.13
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Had you looked into the supplied two links? This 2nd link, offers a Solution.
• [SOLVED} macOS10.13 to 10.13.6 - Apple Community
https://discussions.apple.com/thread/8524120
"possible cause of error: the FileVault disk encryption"
First (from earlier reply, here) is longer thread ~ with 'link to answer' discussion.
• Q: com.apple.osinstall error-1 - Apple Community
https://discussions.apple.com/thread/8355472?answerId=33296064022#33296064022
Even if this "works" could take hours for the mac to digest the matter.
{..To have posted an image ~ was waste of time; we already knew that!!}
Good luck & happy trails!🌞🎣
