use vue to make a back-end system, first route to the login interface, log in successfully to the home page, click on the first-level title router out of the second-level title, when routing the second-level title, the pages are all blank.
app.vuerouter-view;
layoutrouter-view;
this is the code of router. Children cannot router the specified secondary title, and the interface is all white. But the following annotated code can be routed to this component, but the entire interface has only a secondary title
I would like to ask what is the problem? How to change it?
Thank you, boss