Electrical – PIC16f877A: Working in Debug mode not working in Release mode

I am facing an Issue with my PIC16f877A controller.

Its working in Debug mode with PicKit3 connected. But when I program the device for release mode, It gives no sign of working.

I am using MPLAB X with XC8 compiler

I have also connected 10k resistance between MCLR & VDD.

But still unable to resolve the issue.

Here is my main.c

#include "lib/System/config.h"
#include <xc.h>
#include <pic16f877a.h>
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdbool.h>
#include "lib/UART/UARTLib.h"
#include "lib/I2C/I2CInterface.h"
#include "lib/I2C/idmodule.h"

// CONFIG
#pragma config FOSC = HS       // Oscillator Selection bits (HS oscillator)
#pragma config WDTE = OFF       // Watchdog Timer Enable bit (WDT disabled)
#pragma config PWRTE = OFF      // Power-up Timer Enable bit (PWRT disabled)
#pragma config BOREN = ON       // Brown-out Reset Enable bit (BOR enabled)
#pragma config LVP = OFF        // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
#pragma config CPD = OFF        // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
#pragma config WRT = OFF        // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
#pragma config CP = OFF         // Flash Program Memory Code Protection bit (Code protection off)


static unsigned char data_Pkt_1[ MAX_BUF_SIZE ] = { NULL } ;                                // this is the buffer to accept incoming data
static unsigned char data_Pkt_2[ MAX_PKT_SIZE - MAX_BUF_SIZE ] = { NULL } ;             // this is the buffer to accept incoming data

bool isDataPktReceived = false;                         // Flag to check the incoming Data Pkt
bool opStatus = WRITE;

char start_byte_addr[] = { 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70 } ;
int maxBytes;
int Error = 0;

void receiveDataPkt();                                  // Function to receive Data from the PC
void transmitDataPkt();                                 // Function to transmit Data to the PC

void initIDComm();                                      // Function to Initialize ID Module Communication
void initBuffers();                                     // Initialize buffers with 0x00
void write_IDM( void );                                 // Function to Write ID Module
void read_IDM( void );                                  // Function to Read ID Module

bool validateData( void );                              // Function to Validate Data
void createResponsePkt( bool opStatus );                // Function to Create Response Pkt 
void createErrorPkt( void );                            // Function to create Error Pkt
void interrupt ISR(void);                               // Interrupt Service Routine

/**********************************************************
 Function : Main Function to Initialize the Operation
 Parameter : None
 Return   : None
***********************************************************/
int main()
{
    UARTInit();
    idmInitI2C();

    while (1)
    {    
        while ( idmCheckConnection() ) {
            if ( UART_GetRecvByteStatus() ) {
                UART_SetRecvByteStatus(false);              // Set Received flag False
                receiveDataPkt();                           // Receive Incoming data
            }

            if ( isDataPktReceived ) {
                initIDComm();
                isDataPktReceived = false;
            }
        }
    }
    return 0;
}

Please help me debugging the issue.