problem with update - Brave NO PUBKEY

[mustapha don11]

of course here's what i got in result !

total 72
drwxr-xr-x  2 root root  4096 May 15 19:32 .
drwxr-xr-x 309 root root 12288 May 15 17:37 ..
-rw-r--r--  1 root root  2832 May 18  2022 brave-browser-archive-keyring.gpg
-rw-r--r--  1 root root  2247 Apr  5 15:14 ubuntu-advantage-cc-eal.gpg
-rw-r--r--  1 root root  2274 Apr  5 15:14 ubuntu-advantage-cis.gpg
-rw-r--r--  1 root root  2236 Apr  5 15:14 ubuntu-advantage-esm-apps.gpg
-rw-r--r--  1 root root  2264 Apr  5 15:14 ubuntu-advantage-esm-infra-trusty.gpg
-rw-r--r--  1 root root  2275 Apr  5 15:14 ubuntu-advantage-fips.gpg
-rw-r--r--  1 root root  2250 Apr  5 15:14 ubuntu-advantage-realtime-kernel.gpg
-rw-r--r--  1 root root  2235 Apr  5 15:14 ubuntu-advantage-ros.gpg
-rw-r--r--  1 root root  7399 Sep 18  2018 ubuntu-archive-keyring.gpg
-rw-r--r--  1 root root  6713 Oct 27  2016 ubuntu-archive-removed-keys.gpg
-rw-r--r--  1 root root  3023 Mar 27  2021 ubuntu-cloudimage-keyring.gpg
-rw-r--r--  1 root root    0 Jan 17  2018 ubuntu-cloudimage-removed-keys.gpg
-rw-r--r--  1 root root  1227 May 27  2010 ubuntu-master-keyring.gpg