message: Fix syntax error with an undefined value
diff: @@ -337,7 +337,7 @@ class QuickSwap extends PureComponent<IUniversalObj, ComponentState> {
  const { fromWallet } = this.state
  const feeOptsKey = fromWallet?.standard || fromWallet?.currency
  - const currentFeeOpts = externalConfig.opts.fee[feeOptsKey.toLowerCase()]
  + const currentFeeOpts = externalConfig.opts.fee[feeOptsKey?.toLowerCase()]
  const correctFeeRepresentation =
  !Number.isNaN(window?.zeroxFeePercent) &&
  window.zeroxFeePercent >= 0 &&
  