Bip39 buffer is not defined https://www.empowher.com/user/4550298 It truly is very important that the mnemonic sentences are produced from randomly selected numbers! These numbers may be created in a variety of other ways, which happen to be explained in other posts right here, like "What's an RNG" and Seed Phrase Technology. https://bookmarkgenius.com/story19882455/bip39-word-list-txt-how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-english-word-list-https-x-com-tundra838554