Your ROOT_URL in app.ini is https://git.bwnetwork.us/ but you are visiting http://git.bwnetwork.us/Administrator/Proxmox_Helper_scripts/blame/commit/5f3bd5904eb186d315c17e0412b8eec4b881eaef/misc/webmin.sh
You should set ROOT_URL correctly, otherwise the web may not work correctly.
whiptail --backtitle "Proxmox VE Helper Scripts" --title "Webmin Installer" --yesno "This Will Install Webmin on this LXC Container. Proceed?"1058||exit