TypeError: Unicode-objects must be encoded before hashing

[mylarr]

Changed from
def create_self_hash(self):
sha = hashlib.sha256()
sha.update(self.header_string().encode('utf-8'))
return sha.hexdigest()
to
def create_self_hash(self):
sha = hashlib.sha256()
sha.update(self.header_string().encode('utf-8'))
return sha.hexdigest()