rlp: non-canonical integer (leading zero bytes) for *big.Int, decoding into (types.Transaction)(types.txdata).S

i got a error dialog with prompt "rlp: non-canonical integer (leading zero bytes) for *big.Int, decoding into (types.Transaction)(types.txdata).S" while sendRawTransaction using emerald-wallet.
it happens occasionally.

rawTx:
{"from":"0x89ccfcf19d0974132d5088826f9ac0813d12451b","gasPrice":"0x04a817c800","gas":"0x07a120","to":"0x083f4e99AD9798dDb5FcB115d3139F20A367Ab46","value":"0x00","data":"0x01528f5f0000000000000000000000009531ea6e951e20adb91e47c63412f055ba0f1a22"}

and with nonce=1,i got this error.
[error] screenActions - Show error JsonRpcError: rlp: non-canonical integer (leading zero bytes) for *big.Int, decoding into (types.Transaction)(types.txdata).S

so i print "tx.s.toString('hex')", it show me:
afc4cee71254d1d85c6c618c25136a008c8ad98470dc72111ddc2f2e2403d8

then i made another transaction,after that, i repeated the last failed transaction.
this time with nonce=3, then the transaction was successful.
so i print "tx.s.toString('hex')", it show me:
3fb5f1b1d1e3b9afa0b7be08230c0942965fbd13457291637c77901b954fe48c

print two times above,the difference is the length one is 62, the other is 64.