I wrote the code to partially signal the PSBT. Briefly the server sends me a PSBT in Base64 format and N inputs to be signed. I encode the PSBT, signal the inputs with PK utilizing Schnorr methodology. I replace it again to Base64 and ship it to the server (not finalised PSBT with unsigned enter 0).

That is the way it ought to appear like after processing (appropriate):

{
    { ‘outcome’: {
        { ‘inputs’: [
            {
                ‘has_utxo": true,
                ‘is_final": false,
                { ‘next’: { ‘updater’.
            },
            {
                ‘has_utxo": true,
                ‘is_final": false,
                { ‘next’: ‘finalizer’.
            },
            {
                ‘has_utxo": true,
                ‘is_final": false,
                { ‘next’: ‘finalizer’.
            }
        ],
        ‘charge": 1.328e-5,
        ‘subsequent": { ‘updater’
    },
    ‘error": null,
    ‘id": null
}

That is what it appears to be like like after being processed by my script. The Updater standing ought to change to finaliser for these inputs I signed, but it surely does not (incorrect) :

{
    "outcome": {
        "inputs": [
            {
                "has_utxo": true,
                "is_final": false,
                "next": "updater"
            },
            {
                "has_utxo": true,
                "is_final": false,
                "next": "updater"
            }
        ],
        "estimated_vsize": 286,
        "estimated_feerate": 7.0e-5,
        "charge": 2.002e-5,
        "subsequent": "updater"
    },
    "error": null,
    "id": null
}

I checked signatures (they’re appropriate), in contrast appropriate partially signed PSBT and my very own (no variations besides txid, which shall be distinctive each time), even tried to finalise PSBT (though it’s completely not want), however I nonetheless could not perceive why the standing of inputs stays Updater, when it’s despatched with finilize when signed by way of any pockets extension.I do not even perceive the place the error may very well be, since I do the logs BEFORE signing and AFTER signing, and their standing within the logs is up to date. Additionally, in case you take the PSBT after my code has processed it and decoded it, it does replace and is not any completely different from the proper one aside from the TXid.

I am a whole beginner at coding, sorry if I stated something improper

Mistaken of my script:
Uncooked PSBT:

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

After a partial signature Signed:

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

Right:
Uncooked PSBT:

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

After a partial signal PSBT:

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