Although OpenJDK 11 and higher no longer include JavaFX, the FileBot GUI still requires JavaFX (optional, but recommended) which should be an easy-to-satisfy dependency now that Liberica JDK includes those modules out-of-the-box:
https://aur.archlinux.org/packages/liberica-jre-11-full-bin/
Just a heads up.
The latest
*-aur.tar.xzbuilds now require OpenJDK 11 or higher to run: https://get.filebot.net/filebot/BETA/Although OpenJDK 11 and higher no longer include JavaFX, the FileBot GUI still requires JavaFX (optional, but recommended) which should be an easy-to-satisfy dependency now that Liberica JDK includes those modules out-of-the-box: https://aur.archlinux.org/packages/liberica-jre-11-full-bin/