I'm certain it's not person error, Because the recovery phrase was found in two unique locations: backed up in a file on S3, and printed over a bit of paper. Should you be Doubtful about a particular word's spelling, make use of the lookup functionality (Ctrl+F on Windows/Command+F on Mac) https://bookmarkassist.com/story18741280/the-ultimate-guide-to-bip39-seed-phrase-github