Can not get balance

[vodanh86]

I use example from this repo: https://github.com/ton-community/flappy-bird
When I start the project, I got this error message: ui.ts:162 failed to load balance
from these lines of code:
async getBalance() { try { const jetton = this.gameFi.openJetton(Address.parse(this.config.TOKEN_MASTER)); const jettonWallet = await jetton.getWallet(Address.parse(this.gameFi.wallet.account.address)); const jettonWalletData = await jettonWallet.getData(); return jettonWalletData.balance; } catch (e) { console.error('failed to load balance', e); return BigInt(0); } }
Do you know how to fix?

[barinbritva]

Hi @vodanh86,

Could you provide some details? Did you set up your .env with wallets and everything? Did you try to go through step by step tutorial from the related article? https://docs.ton.org/develop/dapps/tutorials/building-web3-game

[vodanh86]

Yes, I did follow every step. This is the .env file:

NODE_ENV=development

Client Configuration

API_URL=http://127.0.0.1:4000/api
MINI_APP_URL=https://t.me/mybot/a

Web Server Configuration

CORS_ENABLED=true
CORS_ORIGIN=https://t.me/mybot/a
NGROK_ENABLED=false
NGROK_AUTHTOKEN=
NGROK_DOMAIN=t.me/mybot/a

Network Configuration

NETWORK=testnet

Your MNEMONIC

MNEMONIC="*****"

Pinata API Keys

PINATA_API_KEY=*****
PINATA_SECRET=******

Telegram Bot Token

TELEGRAM_BOT_TOKEN=******

Jetton

JETTON_ADDRESS="0QBI7qSmcLXLBzIe00pvYquviANpbpeZ-b9oB5XYZfbA0_ac"

SBT Collection

FIRST_TIME_SBT_COLLECTION_ADDRESS="0QAmhsTbd5e6lLEOLkHbEjkjFbz7Kek3JyS2RIqrS4IfFrwP"
FIVE_TIMES_SBT_COLLECTION_ADDRESS="0QBi0nm6Z4EZkfuXdSKbhN_P-cbrk8AC-9mqDt2yylwgJjDs"

[barinbritva]

Hi @vodanh86,

It seems the connected wallet has no 0QBI7qSmcLXLBzIe00pvYquviANpbpeZ-b9oB5XYZfbA0_ac kind of jettons. Knowing nothing about this jettons wallet can't tell the balance. It means there is 0 jettons. We put 0 balance in catch case. So, it's OK case for the current example. Probably in real word app it can be handled more pretty

For the example: I connected 2 wallets. One of them has Flappy coins, the second one has not. Wallet which has jettons shows correct balance.
https://tonscan.org/address/UQCxHX_w7PUX2DqeCitOC9DSg1Orpte-qfGO0jM9F3DZYN1H#tokens - no jettons -> error while loading balance - show 0 balans
https://tonscan.org/address/UQBH6P5-1KqUNGawyA0cRRqhsD-aZiIsEyr2mycIRmTW406D#tokens - has 5 jettons -> show correct balance

Try to play a couple of times to earn Flappy coins and you should see the balance will shown as expected

I hope it helps

[vodanh86]

Dear Barin,
I am runing this project from browser directly, so the tg_data is empty. This is the response:

Is the project need to run in Telegram?

[barinbritva]

Right, this example is designed to showcase TON integration to Mini Apps. The tg_data serves to implement seamless authentication. It allows to get user ID and create internal account inside of the game.

If you want to try running in browser I believe you can do it. In workspaces\server\src\index.ts replace const telegramData = processTelegramData(req.tg_data, config.TELEGRAM_BOT_TOKEN!); with some stub data, like hardcode it. const telegramData = [YOUR HARDCODED data]

As I can see it's only blocker to run the example outside of Mini App platform

[vodanh86]

Hi Barinbritva,
Finally, I can run this project. This project is so exciting
Thank you so much.

[vodanh86]

One more thing,
Do you know why the Jetton and Sbt tokens are unverified?

[barinbritva]

Tonkeeper and some other wallets try to protect users from possible scam. So, they don't have information about tokens and warn users about that

If you run some real token, I believe, there is a procedure to get verified status. But I'm not familiar with the process

[vodanh86]

Many thanks, Barinbritva !!!

[barinbritva]

You're welcome!