[SOLVED] Compile error when adding "const" to class method

For context, I'm fairly new to C++, CLion, and CMake.

Here are the steps that I'm taking:

1. Create a new C++ executable project with C++14 language standard
2. Enter the code below into main.cpp
3. The code builds and runs with no errors

#include <iostream>
using namespace std;

class Person {
public:
    void SayHello () {
        cout << "Hello, World!";
    }
};

int main() {
    Person person;
    person.SayHello();
    return 0;
}

But then as soon as I add the keyword "const" after the method name like so:

void SayHello const () {

I'm getting the following compile errors:

[...]/main.cpp:6:10: error: field has incomplete type 'void'
void SayHello const () {
     ^
[...]/main.cpp:6:18: error: expected ';' at end of declaration list
void SayHello const () {
             ^
             ;
2 errors generated.

How can I fix this?

Thank you!