as title.. the grant_role action
always seems to throw fault, showing a Invalid grant_role value format (should be object) in log .. ?

which i can see you have coded that error in for a reason .. ?

        if (!(value instanceof JsonObject jsonObject)) {
            Discord4Fabric.LOGGER.error("Invalid grant_role value format (should be object)");
            return;
        }

what would be something to look for to fix this issue ?

this mod is Soo versatile ...

You're welcome, apologies for the very late reply

Also having this issue, any luck?

Totally forgot about this, can you send me your grant_role value in your custom events config?
From the error, it seems that you've put something in the value other than an object; it's supposed to be in this format:

"value": {
    "user": "user id to grant to role to",
    "role": "role id"
}

That is definitely the incorrect way to do it; the correct way would be like this:

{
    "id":"grant_role",
    "value": {
        "user":"%linked_account:id%",
        "role":"1061971471485902979"
    }
}

Don't forget to also add the linked_account constraint by doing this:

"requires": [
    "linked_account"
]