Common Errors

Sometimes you may find yourself facing a problem that doesn't have a clear solution. These troubleshooting tips may help you solve problems you run into.

Issues on the Exchange


You're trying to swap tokens, but your slippage tolerance is too low or liquidity is too low.

  1. Refresh your page and try again later.

  2. Try trading a smaller amount at one time.

  3. Increase your slippage tolerance:

    1. Tap the settings icon on the liquidity page.

    2. Increase your slippage tolerance a little and try again.

  4. Lastly, try inputting an amount with fewer decimal places.


Transaction cannot succeed / Price impact too high

Try trading a smaller amount, or increase slippage tolerance via the settings icon and try again. This is caused by low liquidity.

Execution reverted: TransferHelper: TRANSFER_FROM_FAILED.

The transaction cannot succeed due to error: execution reverted: TransferHelper: TRANSFER_FROM_FAILED.

When trying to swap tokens, the transaction fails and this error message is displayed.

  1. Check to make sure you have sufficient funds available.

  2. Ensure you have given the contract allowance to spend the amount of funds you're attempting to trade with.

Issues with Mining Pools

Out of Gas

Warning! Error encountered during contract execution [out of gas]

You have set a low gas limit when trying to make a transaction.

Try manually increasing the gas limit (not gas price!) in your wallet before signing the transaction.

Check your wallet's documentation if you aren't sure how to adjust the gas limit.

Transfer amount exceeds allowance

Fail with error 'ERC20: transfer amount exceeds allowance'

  1. Approve the contract again, without setting a limit on spend allowance

  2. Try interacting with the contract again.

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