Problems working on CSV archive and array of structures on C

Question

I am a complete beginner. I am trying to use strtok in C to read a CSV file, and store the contents into an array structure for each column, but I have a "segmentation fault" message. I will appreciate any advice. Before this I should make a column for deaths/cases and sorting the lines in ascending order, but first I should fix this code.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define SIZE 200
#define COUNT 2

typedef struct data_s {
    char iso[SIZE];
    char continent[SIZE];
    char location[SIZE];
    char date[SIZE];
    unsigned int cases;
    unsigned int deaths;
} data_t;'

int j = 1;

int main()
{
   FILE *myfile;
   myfile = fopen("owid-covid-data-small.csv", "r");

   if (myfile == NULL)
   {
       printf("Archivo no encontrado.");
   }

   rewind(myfile);

   char myLine[SIZE];
   char *delimiter = ",";
   char buffer[SIZE];
   memset(buffer, 0, sizeof(buffer));

   int i = 0;

   for (char c = getc(myfile); c != EOF; c = getc(myfile))
   {
       if (c == '\n')
       {
           j++;
       }
   }

   data_t temp_data[j];
   memset(&temp_data, 0, j*sizeof(data_t));
   rewind(myfile);

   while (fgets(myLine, 200, (FILE*)myfile) != NULL && i<j)
   {
       strcpy(temp_data[i].iso, strtok(myLine, delimiter));
       strcpy(temp_data[i].continent, strtok(myLine, delimiter));
       strcpy(temp_data[i].location, strtok(myLine, delimiter));
       strcpy(temp_data[i].date, strtok(myLine, delimiter));
       temp_data[i].cases = atoi(strtok(NULL, delimiter));
       strncpy(buffer, strtok(NULL, delimiter), SIZE);
       temp_data[i].deaths = atoi(buffer);
       memset(buffer, 0, sizeof(buffer));

       i++;

       for (int i = 0; i < COUNT; i++) 
       {
           printf("Country: %s\n", temp_data[i].location);
           printf("Continent: %s\n", temp_data[i].continent);
           printf("Date: %s\n", temp_data[i].date);
           printf("Total cases: %u\n", temp_data[i].cases);
           printf("Total deaths: %u\n", temp_data[i].deaths);
           printf("\n");
        }
    memset(&temp_data, 0, sizeof(data_t));
    }
    fclose(myfile);
}