Fix

The error "all goroutines are asleep - deadlock!" means your program has stopped because every goroutine is waiting for another to finish, creating a circular dependency with no way to proceed. You must identify the blocking channel operations or mutex locks and ensure at least one goroutine can make progress.

// Example: Fix a deadlock by ensuring a channel is sent to before being read from
func worker(done chan bool) {
    // Bad: This blocks forever if no one sends to 'done'
    // <-done 
    
    // Good: Send a signal to unblock the caller
    done <- true
}

func main() {
    done := make(chan bool)
    go worker(done)
    <-done // Now this unblocks when worker sends
}

The "all goroutines are asleep - deadlock!" error happens when your program gets stuck because every part is waiting for another to act first, like a group waiting for someone to start a conversation. It usually means you forgot to send a message on a channel or release a lock, so nothing can move forward. You need to find the spot where the waiting happens and ensure something actually sends the signal or releases the resource.