backend.js:2527 Uncaught TypeError: Cannot read property 'routerView' of null

[xiaogang12131]

Version

5.3.4

Browser and OS info

Chrome 90.0.4430.93 / Windows 10

Steps to reproduce

Error when opening：

backend.js:2527 Uncaught TypeError: Cannot read property 'routerView' of null
at capture (backend.js:2527)
at Array.map ()
at capture (backend.js:2505)
at Array.map ()
at capture (backend.js:2505)
at Array.map ()
at capture (backend.js:2505)
at Array.map ()
at capture (backend.js:2505)
at Array.map ()

Hope it can be solved

What is expected?

Hope it can be solved

What is actually happening?

Error when opening