I would like to set up a trust line to buy XRPL3DAPES, but I get the error "Error: Invalid type to construct an Amount".

I don't understand why this error is displayed.

I looked at the doc many times, but each time I have a different error.

This is my code:

const xrpl = require("xrpl")
const SERVER = "wss://xrplcluster.com/"

const WebSocket = require("ws")
const ws = new WebSocket(SERVER)


ws.on("close", (code, reason) => {
    console.log("Disconnected. \nCode :", code, "\nReason: ", reason)
})


async function main() {

    const xrpl3dapes = {
        addressIssuerWallet: "rLBW9d9cfEY4ZFPbgqKzEpoEHjKeLrotWZ",
        currency: "5852504C33444150455300000000000000000000"
    }

    let response;

    const client = new xrpl.Client(SERVER)
    await client.connect()

    seed = "sXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
    const wallet = xrpl.Wallet.fromSeed(seed)

    try{
        response = await client.submitAndWait(wallet.sign(
                    {
                            "TransactionType": "TrustSet",
                            "Account": wallet.address,
                            "Fee": base_fee,
                            "LimitAmount":
                            {
                              "currency": xrpl3dapes.currency,
                              "issuer": xrpl3dapes.addressIssuerWallet,
                              "value": "10000"
                            },
                            "sequence": 1
                    }).tx_blob)
    }
    catch (error){
        console.log(error)
    }

    client.disconnect()
    process.exit(1)
}

main()

Thanks for your help !

EDIT: Base_fee must be a string. Else, we get this error.

tx_json = await client.autofill({
            "TransactionType": "OfferCreate",
            "Account": wallet.address,
            "Fee": base_fee,
            "Flags": 262144,
            "TakerGets": takerGets,
            "TakerPays": takerPays
        })

    response = await client.submitAndWait(wallet.sign(tx_json).tx_blob)