Using DLL in another DLL

So I created a DLL(dll1) in visual studio 2022, which uses another DLL(dll2). But whenever I try to use dll2's functions with including dll1, the executable just stops at that point

for example:

dll2 has a function named dll2func1() and dll2func2()

dll1 includes dll2 and has a function like this:

    dll1func1(){
        cout << "started" << endl;
        dll2func1();
        cout << "dll2func1 used" << endl;
        dllfunc2();
        cout << "dll2func2 used, end of function" << endl;
        }

when I use dll1func1() in my program, it only prints "started" and continuing while outputting nothing else.

How can I solve this?