why segmentation fault?

Question

this code goes in segmentation fault, does any expert know why?

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define N 4

char **get_frase(int);
char *get_parola();
void frase_to_file(char **, int, char *[], char *);

int main(int argc, char *argv[]){
  int tot_parole;
  char **frase;
  char *dataset[N] = {"franco", "mauro", "maria", "antonio"};

  printf("tot parole: ");
  scanf("%d", &tot_parole);

  frase = get_frase(tot_parole);

  printf("ciao");

  frase_to_file(frase, tot_parole, dataset, argv[1]);
}

char **get_frase(int tot_parole){
  char **frase;

  frase = calloc(tot_parole, sizeof(char *));

  for(int i=0; i<tot_parole; i++){
    frase[i] = get_parola();
  }

  return frase;
}

char *get_parola(){
  char word[100]; //prova con *
  char *parola;

  printf("\nInserisci: ");
  scanf("%s", word);

  parola = calloc(strlen(word) + 1, sizeof(char));
  strcpy(parola, word);

  return parola;
}

void frase_to_file(char **frase, int tot_parole, char *dataset[], char *file_name){
  FILE *my_file = fopen(file_name, "w");

  for(int i=0; i < tot_parole; i++){
    for(int j=0; i<N; i++){
      if(!strcmp(frase[i], dataset[j])){
        fprintf(my_file, "%s\n", frase[i]);
        break;
      }
    }
  }
  fclose(my_file);
}

Answer 1

It seems the problem is in declaring 'frase' as pointer to pointer to char where as it was supposed to be pointer to char only.
After makin frase as char* it seems to be working fine.
Here is updated code : https://onlinegdb.com/HyN5fZlxN