I'm trying to retrieve all pending transactions by using web3.eth.filter given an address, but i always receive "Invalid JSON RPC Response "" ". Web3 version is 0.20.6.

I'm using rinkeby testnet.

var options = {
  from: "0x9596f1439576e0142976F0822883DE62e326B542",
var filter =  web3.eth.filter( options );

filter.watch(function (error, log) {
  if ( error )
  else {

Check if you have given valid http provider, the error may be it is not able to connect to the network with the provider


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