fix: throw error on nil or negative sweeping amounts

lib/plugins/wallet/geth/base.js

@@ -159,6 +159,10 @@ function generateErc20Tx (_toAddress, wallet, amount, includesFee, cryptoCode) {
       const maxPriorityFeePerGas = new BN(web3.utils.toWei('2.5', 'gwei')) // web3 default value
       const maxFeePerGas = new BN(2).times(baseFeePerGas).plus(maxPriorityFeePerGas)
 
+      if (includesFee && (toSend.isNegative() || toSend.isZero())) {
+        throw new Error(`Trying to send a nil or negative amount. This is probably caused due to the estimated fee being higher than the address' balance. Value provided: ${toSend.toNumber()}`)
+      }
+
       const rawTx = {
         chainId: 1,
         nonce: txCount,