Why is it wrong to assign pointer to cube matrix (armadillo Library) using pointer in vector container?

#include"gdal_priv.h"
#include<armadillo>
#include<vector>

I want to assign a value to the new cube matrix with a known cube matrix. I use the vector container to store the pointer of the known cube matrix. Here is part of my code：

void HRefAly(vector<cube*> ImgData,const char* HRefAlyFilePath,string* RefInf,double Trans[6])
{
    int AllRow = ImgData[0]->n_rows;
    int AllCol = ImgData[0]->n_cols;
    for (int ImgNum = 0; ImgNum < ImgData.size();ImgNum++) 
    {
        int nrow = ImgData[ImgNum]->n_rows;
        int ncol = ImgData[ImgNum]->n_cols;
        int nslices = ImgData[ImgNum]->n_slices;
        
        cube* point = ImgData[ImgNum];
        cube tempImgDataAry(nrow, ncol, nslices);
        tempImgDataAry=*point;
......

When running to the last line of code above, vs will report an error：0x00007FFDDD9912DB (vcruntime140d.dll) (demo1.exe)There is an unhandled exception at: 0xC0000005: Read location 0x0000000000000000 an access conflict occurred。

I know that the size of the cube matrix is 100 * 100 * 3 float. I don't think it will exceed the limit. When I use a single pointer to store a single cube matrix instead of a vector container, it will not report an error, but what I want is to process multiple data. And when I add the following code, I can output an address normally：

cout<<ImgData[ImgNum]<<endl;

The position of prompt in case of error is as follows, and prompt in the last line ×：

arrayops::copy(eT* dest, const eT* src, const uword n_elem)
  {
  if(dest != src)
    {
    if(is_cx<eT>::no)
      {
      if(n_elem <= 9)
        {
        arrayops::copy_small(dest, src, n_elem);
        }
      else
        {
        std::memcpy(dest, src, n_elem*sizeof(eT));
        }
      }

I am a beginner. I hope you can give me your advice. Thank you very much!

I checked sentence by sentence and found that all the previous steps were normal, but I found that in the last step, DeST value was -6.2774385622041925e + 66, SRC value was 0x000000000 {???}, So it's wrong, but I can't see what's wrong.

The armadillo code in case of error is as follows：

template<typename eT>
arma_inline
void
arrayops::copy(eT* dest, const eT* src, const uword n_elem)
  {
  if(dest != src)
    {
    if(is_cx<eT>::no)
      {
      if(n_elem <= 9)
        {
        arrayops::copy_small(dest, src, n_elem);
        }
      else
        {
        std::memcpy(dest, src, n_elem*sizeof(eT));
        }
      }
    else
      {
      if(n_elem > 0)  { std::memcpy(dest, src, n_elem*sizeof(eT)); }
      }
    }
  }

And i found that the following code is ok:

int main() {
    cube test(2,2,2);
    test.slice(0) << 1 << 2 << endr
        << 3 << 4 << endr;
    test.slice(1) << 5 << 6 << endr
        <<  7<< 8 << endr;
    vector<cube*> teessstt;
    cube* point = &test;
    teessstt.push_back(point);

    cube resut = *teessstt[0];
    resut.print();
}