jsp和servlet MVC架构师使用Eclipse3A和Tomcat9.0

通过使用Eclipse3A和Tomcat9.0的jsp和ServletsMVCArchitect，我在服务器中得到了错误404

HTTP Status 404 – Not Found

Type Status Report

Message /Education/RegisterServlet.java

Description The origin server did not find a current representation for the target resource or is not willing to disclose that one exists.

为什么会出现此错误？

尝试此解决方案可能会出现重复的错误