Do you have enough Ether in the address you are trying to swap from? The problem could be that you have insufficient ETH to pay for the gas
What the statement
Required 5135000000000000 and got: 1000000000
basically means is that your address has only
1000000000 WEI or 1 GWEI or 0.000000001 ETH which is ~ 0 ETH
so the for the swap transaction to take place, you need atleast
5135000000000000 WEI or 5135000 GWEI or 0.005135 ETH
in your Ether address