Why does my C + + program have 0xc0000005 error?

Sorry, English is not my native language; please excuse typing errors.

Visual Studio Version: Microsoft Visual Studio Professional 2022 (64-bit) 17.2.5

In my limited experience with I don't now why does my C++ program have 0xC0000005 error, and the program seems to access the address 0x0000000000000000. The code pointed to by the error is the 398th Line of xstring:

return __builtin_strlen(_First);

I' ve looked around and apparently I've got the choice between these libraries/ solutions:

1. Set optimization to "disabled (/OD)"
2. Clean up the solution and rebuild the solution

Wanted to know if it's good practice to do that and what would be the best way to do that? I tried to add a breakpoint to the first line of the program, but it didn't seem to work. The program continued to execute until an error was reported.

Thanks in advance.