After closing and re-opening the lid of my Macbook Pro Early 2015, sometimes it will crash, play the startup sound, and take me back to the login. After I put in my password, it will resume all my applications again, and most of the time an error message will popup saying there was a sleep wake failure asking if I want to report it. I always report it, but it still persists even after updating my mac. I read another post saying that turning off "Put hard disks to sleep when possible" could fix it. I have just tried this and am still waiting to see if this this works, but if it doesn't, I would like to know if there are any other solutions to this situation.