Termux-packages: Unable to install new package.

[gribja]

Previously I have installed x11-repo. But currently I'm facing following error.

$ pkg up
Hit:1 https://termux.net stable InRelease
Hit:2 https://its-pointless.github.io/files termux InRelease
Ign:3 https://dl.bintray.com/xeffyr/x11-packages x11 InRelease
Err:4 https://dl.bintray.com/xeffyr/x11-packages x11 Release
  404  Not Found
Reading package lists... Done
E: The repository 'https://dl.bintray.com/xeffyr/x11-packages x11 Release' does no longer 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.

[Grimler91]

You can either edit $PREFIX/etc/apt/sources.list.d/x11.list and replace https://dl.bintray.com/xeffyr/x11-packages with https://dl.bintray.com/xeffyr/x11-packages-21, or run:

apt remove x11-repo
apt update
apt install x11-repo