TypeError: Cannot read properties of undefined (reading 'balance')

[h6561105]

I removed some of the baseAssets and I get this error message when I try to run trade.js, and also how do I transfer WETH into aurora?

TypeError: Cannot read properties of undefined (reading 'balance') at lookForDualTrade (I:\aurora2\DEX-Arbitrage\scripts\trade.js:52:50) at lookForDualTrade (I:\aurora2\DEX-Arbitrage\scripts\trade.js:64:13) at processTicksAndRejections (node:internal/process/task_queues:96:5) at lookForDualTrade (I:\aurora2\DEX-Arbitrage\scripts\trade.js:64:7) at main (I:\aurora2\DEX-Arbitrage\scripts\trade.js:19:3)

[DDecoene]

Paste your config and I will look at it

[jamesbachini]

Looks like a zero balance issue. Make sure the contract has at least one base asset to trade and is holding an amount of those funds. You can get WETH by wrapping ETH for WETH (Wrapped ETH) on Trisolaris. The team has implemented a transaction fee now unfortunately so you need some ETH in your main account to pay gas fees. You can get a tiny amount of ETH from https://aurora.dev/faucet for larger amounts use one of the bridges. Trisolaris has a list of them.

[slawton3]

I am getting this issue as well. I made sure the contract and owner has enough eth for gas. Was anyone able to find a solution to this?

Here's my config for Aurora:

  "arbContract": "**contract-redacted**",
  "minBasisPointsPerTrade": 0,
  "routers": [
    { "dex": "trisolaris", "address": "0x2CB45Edb4517d5947aFdE3BEAbF95A582506858B" },
    { "dex": "wannaswap", "address": "0xa3a1ef5ae6561572023363862e238afa84c72ef5" },
    { "dex": "auroraswap", "address": "0xA1B1742e9c32C7cAa9726d8204bD5715e3419861" }
  ],
  "baseAssets": [
    { "sym": "weth","address": "0xC9BdeEd33CD01541e1eeD10f90519d2C06Fe3feB" },
    { "sym": "wnear", "address": "0xC42C30aC6Cc15faC9bD938618BcaA1a1FaE8501d" },
    { "sym": "aurora", "address": "0x8BEc47865aDe3B172A928df8f990Bc7f2A3b9f79" },
    { "sym": "usdc", "address": "0xB12BFcA5A55806AaF64E99521918A4bf0fC40802" }
  ],

Error:

undefined
TypeError: Cannot read properties of undefined (reading 'balance')
    at lookForDualTrade (C:\Users\Sean\dev\DEX-Arbitrage\scripts\trade.js:75:46)
    at lookForDualTrade (C:\Users\Sean\dev\DEX-Arbitrage\scripts\trade.js:66:15)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at lookForDualTrade (C:\Users\Sean\dev\DEX-Arbitrage\scripts\trade.js:66:9)
    at lookForDualTrade (C:\Users\Sean\dev\DEX-Arbitrage\scripts\trade.js:66:9)
    at lookForDualTrade (C:\Users\Sean\dev\DEX-Arbitrage\scripts\trade.js:76:5)
    at lookForDualTrade (C:\Users\Sean\dev\DEX-Arbitrage\scripts\trade.js:66:9)
    at lookForDualTrade (C:\Users\Sean\dev\DEX-Arbitrage\scripts\trade.js:66:9)
    at lookForDualTrade (C:\Users\Sean\dev\DEX-Arbitrage\scripts\trade.js:66:9)
    at lookForDualTrade (C:\Users\Sean\dev\DEX-Arbitrage\scripts\trade.js:76:5)

//logged the token after
{
  sym: 'wnear',
  balance: BigNumber { value: "7000000000000000000000000" },
  startBalance: BigNumber { value: "7000000000000000000000000" }
}

[jamesbachini]

Maybe the wannaswap address doesn't have the right checksum (all lowercase)?

Can't see why that would affect it though. Assume you didn't change anything in trade.js?

Would definitely double check all the addresses on a block explorer if that is all you've modified

[zikkuratti]

got the same

[slawton3]

I've narrowed it down to the following:

It looks like the trade.js file is looking for the USDT and UST stablecoin addresses in the balances object under the target route.

This is returning undefined:

balances[targetRoute.token1]

Token 1 (US Terra) does not exist in the contract balance

{
  router1: '0xa3a1ef5ae6561572023363862e238afa84c72ef5',
  router2: '0xA1B1742e9c32C7cAa9726d8204bD5715e3419861',
  token1: '0x5ce9F0B6AFb36135b5ddBF11705cEB65E634A9dC',
  token2: '0xC42C30aC6Cc15faC9bD938618BcaA1a1FaE8501d'
}

Solution Update

Need to remove any routes from the config.json file that contain any removed stablecoin addresses.

[zikkuratti]

@slawton3 yep or just comment out this exception log) it's work