I initialize the view like this, showing 404

I use: tab view, a total of four, I want to initialize the load, but the white screen

My four view layouts are the same as the official Tabbed Views. I want to initialize these four views now, but the white screen

Help me quickly, I saw the document for a week and I was crazy!

I have many, many questions. This is only a part. Help me, help me, Scorpio, I’m going crazy!

help me!!!
help me!!!
help me!!!

please read the doc carefully for the routes