Creating and linking thread getting error "std::Invoke, No matching overloaded function found"

Question

        // The function that the background thread will run
        void runPingThread(std::promise<int>& promiseObj) {
            while (!stopFlag) {
                ping();  // Call the ping function
                std::this_thread::sleep_for(std::chrono::seconds(5));  // Poll every 5 seconds
                int result = 42;
                // Set the value in the promise object
                promiseObj.set_value(result);
            }
        }

        // Initialize the service and start the ping thread
        void init() {
            // Step 1: Create a promise object
            std::promise<int> promiseObj;

            // Step 2: Get a future object associated with the promise
            std::future<int> futureObj = promiseObj.get_future();

            // Step 3: Create a thread and pass the promise object
            pingThread = std::thread(&ConnectionService::runPingThread, std::ref(promiseObj));

            // Step 4: Wait for the result from the thread using future
            std::cout << "Waiting for result from thread..." << std::endl;
            int result = futureObj.get(); // Blocks until the value is set in the promise

            // Step 5: Print the result
            std::cout << "Result from thread: " << result << std::endl;

            /*
            // Start the pinging thread
            pingThread = std::thread(&ConnectionService::runPingThread, this);
            std::cout << "Ping service started..." << std::endl;*/
        }

I am getting error 1>C:\Program Files\Microsoft Visual Studio\2022\Professional\VC\Tools\MSVC\14.41.34120\include\thread(60,14): error C2672: 'invoke': no matching overloaded function found

Both functions are inside class ConnectionService