Error with esp8266

I have been uploading stuff to my Esp8266 for a while, and all of a sudden I got this error:
Arduino: 1.8.2 (Mac OS X), Board: "Generic ESP8266 Module, 80 MHz, 40MHz, DIO, 115200, 1M (512K SPIFFS), ck, Disabled, None"

Archiving built core (caching) in: /var/folders/ht/z4ww1brx0n94bd8tng6gsbn00000gr/T/arduino_cache_141999/core/core_esp8266_esp8266_generic_CpuFrequency_80,FlashFreq_40,FlashMode_dio,UploadSpeed_115200,FlashSize_1M512,ResetMethod_ck,Debug_Disabled,DebugLevel_None_____b6f35b46e81db52e37236ff3616d5e8f.a
Sketch uses 230037 bytes (46%) of program storage space. Maximum is 499696 bytes.
Global variables use 32300 bytes (39%) of dynamic memory, leaving 49620 bytes for local variables. Maximum is 81920 bytes.
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

Looks like the upload is failing. Are you sure you have the module wired correctly?

You haven't told us what ESP8266 board you are using. Are you sure you want to use DIO flash mode instead of QIO and the CK reset method instead of NodeMCU?
Did you pull GPIO0 low while uploading?

Read more here.
Check your hardware as well.

Pieter

PieterP:
You haven't told us what ESP8266 board you are using.
Are you sure you want to use DIO flash mode instead of QIO
CK reset method instead of NodeMCU?

I am using esp-01.
I tried using QIO, but nothing changed.
I'll try.

johnwasser:
Looks like the upload is failing. Are you sure you have the module wired correctly?

It worked the first 3 times, and I didn't change the wiring since then.

I mean esp-01s
I tried all of your tips and it still did not work.
I’m on a mac, if that changes anything
and here is the code

#include <ESP8266WiFi.h>
 
const char* ssid = "YOUR_SSID";//type your ssid
const char* password = "YOUR_PASSWORD";//type your password
 
int ledPin = 2; // GPIO2 of ESP8266
WiFiServer server(80);//Service Port
 
void setup() {
  Serial.begin(115200);
  delay(10);
 
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW);
   
  // Connect to WiFi network
  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
   
  WiFi.begin(ssid, password);
   
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
   
  // Start the server
  server.begin();
  Serial.println("Server started");
 
  // Print the IP address
  Serial.print("Use this URL to connect: ");
  Serial.print("http://");
  Serial.print(WiFi.localIP());
  Serial.println("/");
}
 
void loop() {
  // Check if a client has connected
  WiFiClient client = server.available();
  if (!client) {
    return;
  }
   
  // Wait until the client sends some data
  Serial.println("new client");
  while(!client.available()){
    delay(1);
  }
   
  // Read the first line of the request
  String request = client.readStringUntil('\r');
  Serial.println(request);
  client.flush();
   
  // Match the request
 
  int value = LOW;
  if (request.indexOf("/LED=ON") != -1) {
    digitalWrite(ledPin, HIGH);
    value = HIGH;
  } 
  if (request.indexOf("/LED=OFF") != -1){
    digitalWrite(ledPin, LOW);
    value = LOW;
  }
 
  //Set ledPin according to the request
  //digitalWrite(ledPin, value);
   
  // Return the response
  client.println("HTTP/1.1 200 OK");
  client.println("Content-Type: text/html");
  client.println(""); //  do not forget this one
  client.println("<!DOCTYPE HTML>");
  client.println("<html>");
   
  client.print("Led pin is now: ");
   
  if(value == HIGH) {
    client.print("On");  
  } else {
    client.print("Off");
  }
  client.println("

");
  client.println("Click <a href=\"/LED=ON\">here</a> turn the LED on pin 2 ON
");
  client.println("Click <a href=\"/LED=OFF\">here turn the LED on pin 2 OFF
");
  client.println("</html>");
 
  delay(1);
  Serial.println("Client disconnected");
  Serial.println("");
}

The ESP-01 doesn’t have a USB port. What are you using to program it? Show us your connections.
QIO won’t solve the uploading issue, but it’ll give you twice the memory bandwidth.
Try the NodeMCU reset method.
Have you read the links in my previous post?

Pieter