最近使用微信开发者工具总是报错，微信开发者工具显示的错误是
idea上的报错是 Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause
只要重启电脑就不报错了，不过没运行多久又会回到同样的报错，请教各位，这是什么原因啊
