[SOLVED] ESP8266 crashes on Webserver request

Projects Networking, Protocols, and Devices
1

Hi all, I was messing around with the ESP8233 version on Board Manager and i think I messed up something on my code since it compiles, uploads but crashes once it receives a simple web request.

I have noticed that after compling, the console prints the following and I don't know what it is.
Console:

Executable segment sizes:
IROM   : 303028          - code in flash         (default or ICACHE_FLASH_ATTR) 
IRAM   : 27916   / 32768 - code in IRAM          (ICACHE_RAM_ATTR, ISRs...) 
DATA   : 1292  )         - initialized variables (global, static) in RAM/HEAP 
RODATA : 2088  ) / 81920 - constants             (global, static) in RAM/HEAP 
BSS    : 26576 )         - zeroed variables      (global, static) in RAM/HEAP

Using the serial monitor and the ESP Exception decoder I'm able to trace the last two command before the the crash but i'm not sure what is going on.
ESP Exception decoder:

Decoding stack results
0x4020e0bf: String::String(char const*) at /Users/me/Library/Arduino15/packages/esp8266/hardware/esp8266/2.7.1/cores/esp8266/WString.cpp line 34
0x40203c95: handleRoot() at /Users/me/Documents/Arduino/thisproject/thisproject.ino line 129

The rest of my code looks like this:

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <WiFiUdp.h>
#include<string> // for string class 
#include "index.h" //Our HTML webpage contents

#ifndef STASSID
#define STASSID "ssid"
#define STAPSK  "password"
#endif

const char* ssid = STASSID;
const char* password = STAPSK;

WiFiUDP ntpUDP;
ESP8266WebServer server(80);

void handleRoot() {
  String page = MAIN_page;
  server.send(200, "text/html", page);
}

Setup()

void setup() {
  Serial.begin(115200);
  Serial.println("\n\n\n-----------------------\nBooting");
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  while (WiFi.waitForConnectResult() != WL_CONNECTED) {
    Serial.println("Connection Failed! Rebooting...");
    delay(5000);
    ESP.restart();
  }

  //--------------------------
  //SERVER REQUESTS
  server.on("/", handleRoot);
  server.begin();
  Serial.println("HTTP server started");
}

Loop()

void loop() {
  MDNS.update();
  server.handleClient();
}

I appreciate your help!

2

Where is MAIN_page defined?

Your code is crashing in this line:

String page = MAIN_page;
3

MAIN_page is included as as a separate SPIFFS file called "index.h" and this is what it looks like:

const char OTHER_page[] PROGMEM = R"=====(
<HTML>


<HEAD>
	<TITLE>Grisham - Plant Moisture Monitor</TITLE>
	<meta http-equiv='Content-Type' content='text/html; charset=UTF-8'>
	

</HEAD>
<BODY>
	<div class='card'>
		<div class='titlebox'>
			<p class='titlestyle'>GRISHAM</p>
			<p class='subt'>Plant Moisture Monitor</p>	
		</div>
		<div class='contentcard'>
			<div>
				<p class='contenttext'>Drecaena</p>	
			</div>
			<div>
				<p class='contenttext'>Plant Moisture: </p>
				<p class='contenttext' id="moist">Loading</p>
			</div>
		</div>
		<div id='chart_div' style='width: 100%; height: 500px;'></div>
	</div>

</BODY>
</HTML>
)=====";

I didn't make any changes to the file or to the part calling MAIN_Page before it broke

EDIT:
I originally followed this tutorial and now, copy pasting the code, the device crashes

If this helps, i'm using:
Arduino 1.8.10
Imported boards from: https://arduino.esp8266.com/stable/package_esp8266com_index.json
Board: LOLNIN(WEMOS) D1 R2 & mini
Boards library: ESP8266 V2.7.1

4

UPDATE:

I just downgraded to V2.5.2 and it seems to be working fine, still not sure what broke with the update.

Marked this as solved although I still don't know what caused the issue