(apt) Update fails no public key?

hi and thanks again for your help. Here is what I get when I try:

jmpold@jmpold1525:~ curl -s [https://brave-browser-apt-release.s3.brave.com/brave-core.asc](https://brave-browser-apt-release.s3.brave.com/brave-core.asc) | sudo apt-key --keyring /etc/apt/trusted.gpg.d/brave-browser-release.gpg add - [sudo] password for jmpold: OK jmpold@jmpold1525:~ echo “deb [arch=amd64] https://s3-us-west-2.amazonaws.com/brave-apt lsb_release -sc main” | sudo tee -a /etc/apt/sources.list.d/brave-lsb_release -sc.list
deb [arch=amd64] https://s3-us-west-2.amazonaws.com/brave-apt tina main
jmpold@jmpold1525:~ sudo apt update Ign:1 [http://packages.linuxmint.com](http://packages.linuxmint.com) tina InRelease Hit:2 [http://packages.linuxmint.com](http://packages.linuxmint.com) tina Release Hit:3 [http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu](http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu) bionic InRelease Hit:4 [http://archive.ubuntu.com/ubuntu](http://archive.ubuntu.com/ubuntu) bionic InRelease Get:5 [http://archive.ubuntu.com/ubuntu](http://archive.ubuntu.com/ubuntu) bionic-updates InRelease [88.7 kB] Get:6 [http://security.ubuntu.com/ubuntu](http://security.ubuntu.com/ubuntu) bionic-security InRelease [88.7 kB] Get:7 [http://archive.canonical.com/ubuntu](http://archive.canonical.com/ubuntu) bionic InRelease [10.2 kB] Get:8 [https://brave-browser-apt-release.s3.brave.com](https://brave-browser-apt-release.s3.brave.com) stable InRelease [2,836 B] Err:9 [https://s3-us-west-2.amazonaws.com/brave-apt](https://s3-us-west-2.amazonaws.com/brave-apt) tina InRelease 403 Forbidden [IP: 52.218.235.8 443] Get:10 [http://archive.ubuntu.com/ubuntu](http://archive.ubuntu.com/ubuntu) bionic-backports InRelease [74.6 kB] Hit:11 [https://deb.torproject.org/torproject.org](https://deb.torproject.org/torproject.org) bionic InRelease Get:13 [http://archive.canonical.com/ubuntu](http://archive.canonical.com/ubuntu) bionic/partner i386 Packages [2,292 B] Get:14 [https://brave-browser-apt-release.s3.brave.com](https://brave-browser-apt-release.s3.brave.com) stable/main amd64 Packages [6,060 B] Get:15 [http://security.ubuntu.com/ubuntu](http://security.ubuntu.com/ubuntu) bionic-security/main i386 DEP-11 Metadata [38.5 kB] Get:16 [http://security.ubuntu.com/ubuntu](http://security.ubuntu.com/ubuntu) bionic-security/universe i386 Packages [601 kB] Get:17 [http://archive.ubuntu.com/ubuntu](http://archive.ubuntu.com/ubuntu) bionic-updates/main i386 Packages [625 kB] Get:18 [http://security.ubuntu.com/ubuntu](http://security.ubuntu.com/ubuntu) bionic-security/universe i386 DEP-11 Metadata [42.1 kB] Get:19 [http://security.ubuntu.com/ubuntu](http://security.ubuntu.com/ubuntu) bionic-security/multiverse i386 DEP-11 Metadata [2,464 B] Get:20 [http://archive.ubuntu.com/ubuntu](http://archive.ubuntu.com/ubuntu) bionic-updates/main i386 DEP-11 Metadata [295 kB] Get:21 [http://archive.ubuntu.com/ubuntu](http://archive.ubuntu.com/ubuntu) bionic-updates/universe i386 Packages [997 kB] Get:22 [http://archive.ubuntu.com/ubuntu](http://archive.ubuntu.com/ubuntu) bionic-updates/universe i386 DEP-11 Metadata [264 kB] Get:23 [http://archive.ubuntu.com/ubuntu](http://archive.ubuntu.com/ubuntu) bionic-updates/multiverse i386 DEP-11 Metadata [2,468 B] Get:24 [http://archive.ubuntu.com/ubuntu](http://archive.ubuntu.com/ubuntu) bionic-backports/universe i386 DEP-11 Metadata [7,980 B] Reading package lists... Done E: Failed to fetch [https://s3-us-west-2.amazonaws.com/brave-apt/dists/tina/InRelease](https://s3-us-west-2.amazonaws.com/brave-apt/dists/tina/InRelease) 403 Forbidden [IP: 52.218.235.8 443] E: The repository '[https://s3-us-west-2.amazonaws.com/brave-apt](https://s3-us-west-2.amazonaws.com/brave-apt) tina InRelease' is not signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. jmpold@jmpold1525:~ sudo apt install brave-browser
Reading pa!ckage lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package brave-browser

please let me know what more I can do.

(merci!)

jmpaq