Install script error

[ghost]

The install script throws errors when trying to install the terminal icons in Termux (with fish shell)

 20   master  ✔  ./install.sh     ~/icons-in-terminal
+ DATA=/data/data/com.termux/files/home/.local/share/icons-in-terminal/
+ mkdir -p /data/data/com.termux/files/home/.fonts
+ cp ./build/icons-in-terminal.ttf /data/data/com.termux/files/home/.fonts/
+ mkdir -p /data/data/com.termux/files/home/.config/fontconfig/conf.d
+ ./scripts/generate_fontconfig.sh
./scripts/generate_fontconfig.sh: line 20: fc-list: command not found
+ fc-cache -fvr --really-force /data/data/com.termux/files/home/.fonts
./install.sh: line 30: fc-cache: command not found

also tried the autodetect install script

./install-autodetect.sh
+ DATA=/data/data/com.termux/files/home/.local/share/icons-in-terminal/
+ mkdir -p /data/data/com.termux/files/home/.fonts
+ cp ./build/icons-in-terminal.ttf /data/data/com.termux/files/home/.fonts/
+ mkdir -p /data/data/com.termux/files/home/.config/fontconfig/conf.d
+ ./scripts/generate_fontconfig_autodetect.sh
/data/data/com.termux/files/home/icons-in-terminal/scripts/detect_font_terminal/find_font_gnometerminal.sh: line 10: dconf: command not found
+ fc-cache -fvr --really-force /data/data/com.termux/files/home/.fonts
./install-autodetect.sh: line 28: fc-cache: command not found