INVALID_KEY

This transaction was not submitted because it was sent to the blockchain with a key that is invalid. Double check the signing/hashing algorithms.

[Error Code: 1009] error caused by: 1 error occurred: * transaction verification failed: [Error Code: 1006] invalid proposal key: public key 0 on account 4219a16943bb0993 does not have a valid signature: [Error Code: 1009] invalid envelope key: public key 0 on account 4219a16943bb0993 does not have a valid signature: signature is not vali