For that reason, BIP39 proposes to make use of an algorithm to convert a seed right into a mnemonic phrase string. It extends the algorithm for generating wallet seeds. Meticulously critique your recovery phrase for just about any typos or spelling glitches. Even one blunder can result in this error. http://andersonsaeu988.iamarrows.com/from-mnemonics-to-safety-and-security-recognizing-bip39-passphrases-and-their-significance-in-copyright