The "could not load available zip file" error is a symptom of an aging ecosystem. Development on the classic Xposed framework by rovo89 effectively stopped in 2017. For Android 9 and above, (or LSPosed , a newer alternative) is the correct path.
Troubleshooting “Xposed Installer Could Not Load Available ZIP File” Error xposed installer could not load available zip file
Today, Xposed has faded—replaced by EdXposed, LSPosed, and the rise of virtual root solutions. But old-timers still smirk when they see “could not load available zip file.” Not in frustration, but in fond remembrance. The "could not load available zip file" error