I think you need to define what you mean by "crash". Typically, the word "crash" means that the application you're using effectively vanishes and you get an error message from the operating system. That being the case, it would be very unlikely for the server to be involved.
If you're receiving a cute error page from Disney itself, then it isn't a crash. Technically it is an exception - it is no different from when you spell something wrong and hit backspace on your keyboard. That could be that the server is busy handling other requests. That happens with every application to some extent - generally less with Amazon, Microsoft and Google; Comcast, Charter, Verizon, and the like - but my bank occasionally tells me that it is too busy to show me my balance, CNN occasionally tells me to try again later when I click on a video link, and my favorite online game occasionally spits out exception messages like that.