Doesn't work with PIC18F27K40 #2

Hi I have tried to use your library with PIC18F27K40. But it doesn't work. The library worked in Proteus simulation with PIC18LF46K80. But same code doesn't work with PIC18F27K40 hardware. it toggle six times. that means JSON_DECODER_fromString() doesn't return JSON_DECODER_OK. Please Help.

Here is my code:
#include "mcc_generated_files/mcc.h"
#include "json_decoder.h"
#include<stdlib.h>
#include<string.h>
#define LED "{"blink":1,"setHigh":2,"setLow":0}"

/*
Main application
*/
jsonNode_t *root;
int blink, setHigh, setLow;
char str[64];
jsonDecoderStatus_t ret;

void toggle_times(int n) {
int i;
for (i = 0; i < n; i++) {
LED_RED_Toggle();
LED_GREEN_Toggle();
LED_BLUE_Toggle();
__delay_ms(1000);
}
}

void set_all_low() {

LED_RED_SetLow();
LED_GREEN_SetLow();
LED_BLUE_SetLow();

}

void set_all_high() {

LED_RED_SetHigh();
LED_GREEN_SetHigh();
LED_BLUE_SetHigh();

}

void main(void) {
// Initialize the device
SYSTEM_Initialize();
memcpy(str, LED, sizeof (LED));
ret = JSON_DECODER_fromString(str);
if (JSON_DECODER_OK != ret) {
toggle_times(6);
set_all_high();
}
JSON_DECODER_getRoot(&root);
JSON_DECODER_getNumber(root, "setHigh", &setHigh);

JSON_DECODER_getNumber(root, "blink", &blink);

JSON_DECODER_getNumber(root, "setLow", &setLow);

switch (setHigh) {
    case 0:
        LED_RED_SetHigh();
        break;
    case 1:
        LED_GREEN_SetHigh();
        break;
    case 2:
        LED_BLUE_SetHigh();
        break;
}
switch (setLow) {
    case 0:
        LED_RED_SetLow();
        break;
    case 1:
        LED_GREEN_SetLow();
        break;
    case 2:
        LED_BLUE_SetLow();
        break;
}



while (1) {
    switch (blink) {
        case 0:
            LED_RED_Toggle();
            break;
        case 1:
            LED_GREEN_Toggle();
            break;
        case 2:
            LED_BLUE_Toggle();
            break;
    }
    __delay_ms(1000);
    // Add your application code
}

}
/**
End of File
*/_