debugger can't find file.

[grayarea56]

The program runs fine without the debugger.
But when I single step some basic C functions, for instance strcpy, I get this message in the debugger:
Cannot open file: ../sysdeps/x86_64/multiarch/strcpy-avx2.S
Does anyone know what's going on?
Oh, BTW, I'm using WSL Ubuntu under windows 10.
Thanks,
Dan Gray
P.S. here's my test code:

Code

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

int main()
{
    printf("Hello world!\n");
    printf("Sqrt2=%f\n",sqrt(2.0));
    double two = 2.001;
    printf("Sqrt2.001=%f\n",sqrt(two));
    char  goodby[100];
    goodby[10] = 0;
    char hello[100];
    strcpy(hello,"hello");
    hello[5] = 0;
    strcpy(goodby, hello);
    printf("goodby=%s",goodby);
    return 0;
}

[stahta01]

Read https://stackoverflow.com/questions/54282586/sysdeps-i386-i686-multiarch-strcpy-c-no-such-file-or-directory

I think it applies to your question.

Tim S.