ESP32 WiFi AP BUG!

void OTA() {

    WiFi.mode(WIFI_AP);
    WiFi.softAP(ssid);
    //WiFi.onEvent(WiFiStationConnected, SYSTEM_EVENT_AP_STACONNECTED);
    String _ip = WiFi.softAPIP().toString();
    //Serial.print("IP address: "); `
    Serial.println(_ip);

    //return index page which is stored in serverIndex
    server.on("/", HTTP_GET, []() {
      server.sendHeader("Connection", "close");
      server.send(200, "text/html", loginIndex);
    });

  server.on("/", HTTP_GET, []() {
    server.sendHeader("Connection", "close");
    server.send(200, "text/html", serverIndex);
  });

  /*handling uploading firmware file */
  server.on("/update", HTTP_POST, []() {
    server.sendHeader("Connection", "close");
    server.send(200, "text/plain", (Update.hasError()) ? "FAIL" : "OK");
    ESP.restart();
  }, []() {
    HTTPUpload& upload = server.upload();
    if (upload.status == UPLOAD_FILE_START) {
      Serial.printf("Update: %s\n", upload.filename.c_str());
      if (!Update.begin(UPDATE_SIZE_UNKNOWN)) { //start with max available size
        Update.printError(Serial);
      }
    } else if (upload.status == UPLOAD_FILE_WRITE) {
      /* flashing firmware to ESP*/
      if (Update.write(upload.buf, upload.currentSize) != upload.currentSize) {
        Update.printError(Serial);
      }
    } else if (upload.status == UPLOAD_FILE_END) {
      if (Update.end(true)) { //true to set the size to the current progress
        Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
      } else {
        Update.printError(Serial);
      }
    }
  });
  server.begin();

  while (1) {
    server.handleClient();
    delay(1);
  }
}