Error: overflow (fault="overflow", operation="toNumber")

[chekun]

Hi guys, I follow the readme guide, but stuck with this error when calling getExpectedReturnWithGas, for destTokenEthPriceTimesGasPrice arg, it always return error with something like

Error: overflow (fault="overflow", operation="toNumber", value="925003271924762633938248194741364019606826595687598837055279805260905", code=NUMERIC_FAULT, version=bignumber/5.0.5)

Guide says arg destTokenEthPriceTimesGasPrice is returnAmount * gas_price, where returnAmount is result of getExpectedReturn(fromToken, destToken, amount, parts, flags), how do i get into this error? Please help me , Thank you very much.

Example code:

const { returnAmount, distribution } = await contract.methods.getExpectedReturn(
  '0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE',
  daiAddress,
  web3.utils.toWei('100', 'ether'),
  parts,
  0x00,
).call();
console.log('expected return -> ', returnAmount);
const destTokenEthPriceTimesGasPrice = web3.utils.toBN(returnAmount).mul(web3.utils.toBN(200*Math.pow(10, 9)));

const { returnAmount: a, estimateGasAmount,  distribution: b} = await contract.methods.getExpectedReturnWithGas(
  '0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE',
  daiAddress,
  web3.utils.toWei('100', 'ether'),
  parts,
  0x00,
  destTokenEthPriceTimesGasPrice,
).call();
console.log(a);

PS: i'm using web3@1.2.1

[m0onspell]

hey, how did you solve it? can you please share?

[chekun]

@m0onspell
could not recall how i resole it, maybe try to approve ahead?