./build.sh: 14: [: xorg.gnome.Polari: unexpected operator
========== Building org.gnome.Polari ================
Fetching git repo git://github.com/flathub/org.gnome.Polari.git
Cloning into '/home/builder/flatpak-build-scripts/work/build/arm/gnome-apps-nightly-stable/.flatpak-builder/build/org.gnome.Polari.json-1'...
done.

(flatpak-builder:23280): flatpak-WARNING **: Unknown property cleanup-commands for type BuilderModule
Downloading sources
Fetching git repo https://github.com/googlei18n/noto-emoji.git
Starting build of org.gnome.Polari
Cache hit for telepathy-glib, skipping build
Cache hit for telepathy-mission-control, skipping build
Cache hit for telepathy-idle, skipping build
Cache hit for telepathy-logger, skipping build
Cache hit for python-lxml, skipping build
Cache hit for python-six, skipping build
Cache hit for fontconfig, skipping build
Cache hit for cairo, skipping build
Cache hit for noto-emoji, skipping build
Cache hit for gspell, skipping build
Cache hit for polari, skipping build
Cache hit for cleanup, skipping
Cache hit for finish, skipping
Pruning cache