libc++abi: terminating with uncaught exception of type std::__1::system_error: condition_variable wait failed: Invalid argument

This error occurs when a condition_variable is waiting for a notification, but the underlying condition is not valid. This can happen if the function is called with an invalid argument or if the condition was not initialized properly.

To fix this error, you need to check the arguments being passed to the condition_variable and ensure that they are valid. You may also need to initialize the condition properly before using it.

Here's an example of how to use a condition_variable:

#include <iostream>
#include <condition_variable>
#include <mutex>
#include <thread>

std::condition_variable cv;
std::mutex mtx;
bool ready = false;

void thread_func()
{
    std::unique_lock<std::mutex> lock(mtx);
    ready = true;
    cv.notify_one();
}

int main()
{
    std::thread t(thread_func);

    std::unique_lock<std::mutex> lock(mtx);
    while (!ready) {
        cv.wait(lock);
    }

    t.join();
    return 0;
}

In this example, we create a condition_variable named `cv`, a mutex named `mtx`, and a boolean flag called `ready`. We start a new thread that sets the `ready` flag to true and notifies the condition_variable. In the main thread, we wait for the notification by calling `cv.wait(lock)` in a loop.

Note that we need to acquire the lock before calling `cv.wait()` or `cv.notify_one()`. This ensures that the condition is modified atomically and prevents race conditions.

If you are still experiencing the error after checking your code, you may need to consult the documentation for the specific function that is throwing the exception to see if there are any known issues or limitations.