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Cannot invoke contract functions

See original GitHub issue

Hello, I am new to starknet js. I’m trying to invoke a function of a contract using this code :

        const { transaction_hash: transferTxHash } = await account.execute(
                contractAddress: eykarCommunityContract.address,
                entrypoint: "completeQuest",
                calldata: [questId, player],
            { maxFee: "0" }

But I get this error:

TypeError: Cannot read properties of undefined (reading '0')
    at Account.<anonymous> (/home/nicolas/Desktop/Nico/eykar/API/node_modules/starknet/dist/account/default.js:125:92)

So I went to /home/nicolas/Desktop/Nico/eykar/API/node_modules/starknet/dist/account/default.js:125:92

the error is here:

    Account.prototype.getNonce = function () {
        return __awaiter(this, void 0, void 0, function () {
            var result;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.callContract({
                            contractAddress: this.address,
                            entrypoint: 'get_nonce',
                    case 1:
                        result = (_a.sent()).result;

                        // ------------------------------------------I Added a console.log -----------------------------------------

                        return [2 /*return*/, (0, number_1.toHex)((0, number_1.toBN)(result[/*     THIS IS THE ERROR        */0]))];

So I printed the source of the “result” variable in the console (_a.sent()), and I get this:

[Object: null prototype] {
  code: 'StarkErrorCode.MALFORMED_REQUEST',
  message: "can't use a string pattern on a bytes-like object"

So there’s definitely something I missed (this is the first time I’ve done this). If you have an idea of the problem, don’t hesitate. Thank you in advance

Issue Analytics

  • State:closed
  • Created a year ago
  • Comments:8 (1 by maintainers)

github_iconTop GitHub Comments

Marchand-Nicolascommented, Jul 14, 2022

I solved the problem by changing my account. I used an account generated on ArgentX. (and the .toLowerCase() helped me with the address given by ArgentX)

0x25cfb68commented, Jul 13, 2022

I just faced this issue too, like you did I was able to track it down to getNonce (link)

I noticed that this call fails if the address has capital letters (checksumed):

const { result } = await this.callContract({
  contractAddress: this.address,
  entrypoint: 'get_nonce',

looks like Starknet fails to make calls to contracts with checksumed address, the weird thing is that executing calls works without needing to lowercase the address 🤔

when I updated my account initialization it worked

const account = new Account(

PS: I copied the address straight from Argent wallet without noticing it was checksumed.

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