What ESP8266 module do you have?
Do you have a module (ESP-01 - ESP-12) or a development board (like the NodeMCU, already mentioned, or a Wemos)?
What does it look like and where did you get it from: show us a picture or a link.
Our Wiki might also help you identifying the one you have (though it is outdated).
QuickFix wrote:@rpiloverbd: just to be clear (for TS) an ESP8266 is not a NodeMCU; the NodeMCU board contains an ESP8266.
What ESP8266 module do you have?
Do you have a module (ESP-01 - ESP-12) or a development board (like the NodeMCU, already mentioned, or a Wemos)?
What does it look like and where did you get it from: show us a picture or a link.
Our Wiki might also help you identifying the one you have (though it is outdated).
Oh I really made a gross mistake even though I knew these matters! Thanks a lot, dear friend. You made it clear. Let's see what the questioner is using. Thanks again.