SOLVED: Nginx http2 issues

[TheDreadPirate]

Change this

Code:

server {
    listen 443 ssl;
    listen [::]:443 ssl;
    http2 on;
    server_name REDACTED.duckdns.org;

to

Code:

server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name REDACTED.duckdns.org;