Do you have USB 2 TTL adaptor wired up to your Uno?
Your problem was covered 7 posts before yours, see [SOLVED] ESP8266 as a wifi shield of Arduino Uno to control a 6 channel Relay
Do you have USB 2 TTL adaptor wired up to your Uno?
Your problem was covered 7 posts before yours, see [SOLVED] ESP8266 as a wifi shield of Arduino Uno to control a 6 channel Relay