Hi.
What libraries and how did you install them?
Can you provide a link to the libraries you installed?
Regards,
Sara

Thanks Sara for following up, please review the info below and let me know your inputs – many thanks in advance.
Libraries are:

[env:nodemcu-32s]
platform = espressif32
board = nodemcu-32s
framework = arduino
monitor_speed = 115200
lib_deps =
adafruit/Adafruit BME280 Library@^2.2.2
khoih-prog/ESP_WifiManager@^1.12.1
ottowinter/ESPAsyncWebServer-esphome@^3.0.0
arduino-libraries/ArduinoHttpClient@^0.4.0
hieromon/AutoConnect@^1.4.2
hieromon/PageBuilder@^1.5.6
bblanchon/ArduinoJson@^6.21.2

And here is main.cpp file is:

//https://hieromon.github.io/AutoConnect/gettingstarted.html

#include <WiFi.h>          // Replace with WiFi.h for ESP32
#include <WebServer.h>     // Replace with WebServer.h for ESP32
#include <AutoConnect.h>

#include <DNSServer.h>
#include <AsyncTCP.h>
#include “ESPAsyncWebServer.h”
#include “HttpClient.h”

#include <Adafruit_Sensor.h>
#include <Adafruit_BME280.h>
#include “functions.h”

WebServer Server;          // Replace with WebServer for ESP32
AutoConnect Portal(Server);

void rootPage() {
char content[] = “Hello, world”;
Server.send(200, “text/plain”, content);
}

void setup() {
delay(1000);
Serial.begin(115200);
Serial.println();

Server.on(“/”, rootPage);
if (Portal.begin()) {
Serial.println(“WiFi connected: ” + WiFi.localIP().toString());
}
}

void loop() {
Portal.handleClient();
}

though functions.h file has nothing to do with error, I am copying here for reference:

Adafruit_BME280 bme;
float env_Temp()
{
Serial.print(“Temperature = “);
  float Temp = bme.readTemperature();
  Serial.print(Temp);
  Serial.println(“°C”);
  Serial.println();
  return Temp;
  }
float env_Press()
{
    Serial.print(“Pressure = “);
    float Press = bme.readPressure() / 100.0F ;
    Serial.print(Press);
    Serial.println(“hPa”);
    Serial.println();
    return Press;
  }
float env_Humid()
{
    Serial.print(“Humidity = “);
    float Humid = bme.readHumidity();
    Serial.print(Humid);
    Serial.println(“%”);
    Serial.println();
  return Humid;
  }

Hi.
try using platform = espressif32@3.5.0 on your platformio file instead of platform = espressif32
 
let me know if this solves the problem.
 
regards 
Sara

Hi Sara
I tried, but in vain.
I tested a different portal code (https://iotespresso.com/create-captive-portal-using-esp32/) and that seems to work. I edited it and now captures WiFi name and Password. I was really hoping that user does not have to input WiFi name (code scans all nearby WiFis and provide a list to user to select one). 
As for my original question/issue, it could be board issue. I have ordered another one (ESP32 WROOM) and will retry https://hieromon.github.io/AutoConnect/index.html with the new board. Meantime, if you have suggestions for me, please share.
Amicalement 
Mudassir

Hi.
No, I don’t think it is a problem with the board.
I think it might be an issue with the libraries or dependencies of the configuration of your platformio.ini file.
When creating the Arduino project on VS Code, try selecting the DOIT board instead. Then, test the code again.
Regards,
Sara

THANK YOU Sarah, I changed to DOIT board and it worked flawlessly. 
Now moving on to adding other functionalities that I need for the project.
Appreciate your help,
Regards
Mudassir

Great!
I’ll mark this issue as resolved.
If you need further help, you just need to open a new question in our forum.
Regards,
Sara