Exception Thrown - Access violation writing location 0x00000000 using structs

I'm trying to copy from one struct which contains 3 variables into a different struct thats ment to contain the information in one char array using memcpy.

I ran earlier into the error of not being able to handle the data that I input. Therefore im trying to write the data thats in templist into shoppinglist.MyList[1]

typedef struct matvara {
    char food[25];
    float amount;
    char unit[10];
} matvara;

typedef struct shoplist {
    char grocery_list[9001];
    int length; //Currently not used        
} shoplist;

void add_food(matvara *typ, shoplist *MyList);

int main(void)
{
    struct shoplist MyList = { 0 };
    struct matvara typ = { 0 };
    add_food(&typ, &MyList, &counter);
}
void add_food(matvara *typ, shoplist *MyList)
{
     char templist[50]
     //....Filling struct with data and tranfer it to templist[50]
     //Works til I try to perform the memcpy.
     memcpy(MyList->grocery_list[1], templist, strlen(templist)); //This is where the error occurs.
}   

The expected result is that the memcpy succeeds so that I can later access it in grocery_list[1].

The error message I get is:

Exception thrown at 0x0FC631BF (vcruntime140d.dll) in Project6.exe: 0xC0000005: Access violation writing location 0x00000000.