As you are new to on the forum - perhaps new to Arch based systems as well - please do remember that custom packages, such as those build from scripts hosted at Arch User Repository is unsupported.
Any and all such scripts are unsupported as stated on the AURweb and issues with those should be directed at the script maintainer
DISCLAIMER: AUR packages are user produced content. Any use of the provided files is at your own risk.
– https://aur.archlinux.org
To educate yourself on Manjaro’s relationship → [Need-To-Know] About Manjaro and AUR