Problem signing PSBT with some wallets

Hi,

I'm having issues signing the psbt with some wallets because of input 0, for example trying to sign with blue wallet I get the error: "Can not finalize input #0" and signing with bitcoinjs-lib, I get "no inputs were signed" error. I don't have any issue signing normal psbts.

Is there anything I can do to solve this issue?

Thanks,

The report concerns signing a PSBT whose input 0 cannot be finalized by Blue Wallet or bitcoinjs-lib, while normal PSBTs work. Start by obtaining the affected PSBT and reproducing the failures with those wallets; completion would require identifying why input 0 is incompatible and demonstrating successful signing without breaking normal PSBTs.

Written by the indexing model from the issue text.