Keyboard shortcuts not shown at brave://extensions/shortcuts

As in title, keyboard shortcuts not shown at brave://extensions/shortcuts

System info

+ uname -a
Linux slax 4.9.0-11-amd64 #1 SMP Debian 4.9.189-3 (2019-09-02) x86_64 GNU/Linux
+ brave-browser --version
Brave Browser 
Version 1.34.80 Chromium: 97.0.4692.71 (Official Build) (64-bit)

Browser stdout log:

[13997:13997:0119/151138.292248:ERROR:CONSOLE(0)] "(WEBUI context) extensions::safeMethods:20: Uncaught TypeError: Illegal invocation{TypeError: Illegal invocation
    at Object.define (extensions::safeMethods:20:22)
    at extensions::guestViewContainerElement:67:28
    at registerElement (extensions::guestViewContainerElement:56:28)
    at extensions::extensionOptionsElement:25:1}", source: chrome://extensions/shortcuts (0)

error fixed.
i don’t know why, but fixed after installing violent monkey , enabling IPFS (brave://settings/ipfs) and i have clicked repair button on google translate (brave://extensions/)