New installed app creates error

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Just installed app from f-droid. The only command I used is "pkg update" but output is

$pkg update
Ign:1 https://dl.bintray.com/termux/termux-packages-24 stable InRelease
Ign:2 https://dl.bintray.com/grimler/game-packages-24 games InRelease
Ign:3 https://dl.bintray.com/grimler/science-packages-24 science InRelease
Err:4 https://dl.bintray.com/termux/termux-packages-24 stable Release
403 Forbidden
Get:5 https://dl.bintray.com/grimler/game-packages-24 games Release [5344 B]
Hit:5 https://dl.bintray.com/grimler/game-packages-24 games Release
Get:6 https://dl.bintray.com/grimler/science-packages-24 science Release [5348 B]
Hit:6 https://dl.bintray.com/grimler/science-packages-24 science Release
Reading package lists... Done
E: The repository 'https://dl.bintray.com/termux/termux-packages-24 stable Release' does not have a Release file.
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.
$

Also pkg list-all show [installed, local] on every instaled app

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termux/termux-packages#4358