<ul><li>The user created a 2/3 multisig script with timelock, where the admin can withdraw BTC after the timelock.</li><li>However, the bitcoin node returned an error with code -26 and message 'mandatory-script-verify-flag-failed (Non-canonical DER signature).'</li><li>The user shared the code snippet for creating the multisig locktime redeem script and constructing the multisig transaction.</li><li>The user also included the signatures and the resulting signature script, as well as the signed transaction and the transaction ID.</li></ul>

send btc from P2SH(multisig and timelock script),got "Non-canonical DER signature"

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