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/1ae673692e5eb6919a3be5f4ff364e2366d76764/install/pihole-install.sh
You should set ROOT_URL correctly, otherwise the web may not work correctly.
#!/usr/bin/env bash
# Copyright (c) 2021-2023 tteck
# Author: tteck (tteckster)
# License: MIT
# https://github.com/tteck/Proxmox/raw/main/LICENSE
source /dev/stdin <<< " $FUNCTIONS_FILE_PATH "
color
verb_ip6
catch_errors
setting_up_container
network_check
update_os
msg_info "Installing Dependencies"
$STD apt-get install -y curl
$STD apt-get install -y sudo
$STD apt-get install -y mc
$STD apt-get install -y ufw
$STD apt-get install -y ntp
msg_ok "Installed Dependencies"
msg_info "Installing Pi-hole"
mkdir -p /etc/pihole/
cat <<EOF >/etc/pihole/setupVars.conf
PIHOLE_INTERFACE = eth0
PIHOLE_DNS_1 = 8.8.8.8
PIHOLE_DNS_2 = 8.8.4.4
QUERY_LOGGING = true
INSTALL_WEB_SERVER = true
INSTALL_WEB_INTERFACE = true
LIGHTTPD_ENABLED = true
CACHE_SIZE = 10000
DNS_FQDN_REQUIRED = true
DNS_BOGUS_PRIV = true
DNSMASQ_LISTENING = local
WEBPASSWORD = $( openssl rand -base64 48)
BLOCKING_ENABLED = true
EOF
# View script https://install.pi-hole.net
$STD bash <( curl -fsSL https://install.pi-hole.net) --unattended
msg_ok "Installed Pi-hole"
motd_ssh
customize
msg_info "Cleaning up"
$STD apt-get autoremove
$STD apt-get autoclean
msg_ok "Cleaned"