You must select "Recovery (write zip to SD card, flash manually)" Installation mode in Xposed Installer, and click "Install/Update" button, then click "Cancel" before install this Magisk module.
The binaries are extract from Xposed Installer https://repo.xposed.info/module/de.robv.android.xposed.installer.
This module will never get any updates in the future, since @rovo89 has stopped development. This module is here for historical reasons.
For other Android version, check the Wiki: https://github.com/ElderDrivers/EdXposed/wiki/Available-Android-versions