When Lucifer called his reinforcements (at 75%, 50% and 25% of his health) while any other elite was alive, the server could stop with "Exception ticking world ...

- Fixed angels not spawning naturally on dedicated servers, and spawn settings in weeping_angels_spawns.json not applying (#408, #419) - Fixed a crash on world load (Platform.getServer() was null in ...

Customer stories Events & webinars Ebooks & reports Business insights GitHub Skills ...

Step 1 Enter an Error Paste any raw stack trace, exception, compiler warning, or runtime crash message (or test with 1-click Quick Samples). Step 2 Select a ...

ConcurrentModificationException是Java集合框架中典型的快速失败（fail-fast）机制体现，源于迭代器与集合间modCount校验失效，其核心并非仅限多线程并发，单线程遍历中修改集合同样触发。

ConcurrentModificationException 这个异常名字起得有点误导人，很多人第一反应是「我代码里没开线程啊，哪来的并发」。 其实它跟多线程没有必然关系，单线程照样能触发。 它的本质是： 集合在迭代过程中被结构性修改了，而迭代器并不知情。