When I build a commoncontroller under the controller under Home, the commoncontroller cannot be found. What is the problem?

Question

When I build a commoncontroller under the controller under Home, the commoncontroller cannot be found. What is the problem?

Answer 1

Generally, the namespace used by the MVC structure is best to use the camel case method, check whether it is a system function

Answer 2

Check whether the file name is correct, check whether the configuration file controller has a suffix, and check whether the namespace is correct