307 Temporary Redirect On Specific Routes - apache

Question

I have an api service that i wrote with FastApi and served with gunicorn. Apache is working on the server as reverse proxy and ssl manage.
Everything was fine until i decided to use SqlAdmin as admin panel.
The problem is that my api endpoints works fine with SSL but SqlAdmin endpoints are not.
e.g: Responses i get when i want reach https://example.com/admin: (FAIL)
--- I summarized responses ---
307 Temporary Redirect -> http://example.com/admin
302 Not Found
Somehow redirect -> https://example.comadmin/
e.g: Responses i get when i want reach https://example.com/users: (PASS) (API ENDPOINT)
Request URL: https://example.com/users/
Request Method: GET
Status Code: 200 OK
Apache Configuration:
<VirtualHost ip:80>
ServerName subdomain.example.com
ServerAlias www.subdomain.example.com
ServerAdmin ****#gmail.com
Redirect / https://subdomain.example.com
</VirtualHost>
<VirtualHost ip:443>
ServerName subdomain.example.com
ServerAlias www.subdomain.example.com
ServerAdmin ******#gmail.com
ProxyRequests On
ProxyPreserveHost On
<Proxy *>
Order deny,allow
Allow from all
</Proxy>
SSLEngine on
SSLCertificateFile *****
ProxyPass / http://example.com:8000/
ProxyPassReverse / http://example.com:8000/
<Location />
Order allow,deny
Allow from all
</Location>
</VirtualHost>
Gunicorn Configuration:
import json
import multiprocessing
import os
workers_per_core_str = os.getenv("WORKERS_PER_CORE", "1")
max_workers_str = os.getenv("MAX_WORKERS")
use_max_workers = None
if max_workers_str:
use_max_workers = int(max_workers_str)
web_concurrency_str = os.getenv("WEB_CONCURRENCY", None)
host = os.getenv("HOST", "0.0.0.0")
port = os.getenv("PORT", "80")
bind_env = os.getenv("BIND", None)
use_loglevel = os.getenv("LOG_LEVEL", "warning")
if bind_env:
use_bind = bind_env
else:
use_bind = f"{host}:{port}"
cores = multiprocessing.cpu_count()
workers_per_core = float(workers_per_core_str)
default_web_concurrency = workers_per_core * cores
if web_concurrency_str:
web_concurrency = int(web_concurrency_str)
assert web_concurrency > 0
else:
web_concurrency = max(int(default_web_concurrency), 2)
if use_max_workers:
web_concurrency = min(web_concurrency, use_max_workers)
accesslog_var = os.getenv("ACCESS_LOG", "/var/log/gunicorn/access_log")
use_accesslog = accesslog_var or "/var/log/gunicorn/access_log"
errorlog_var = os.getenv("ERROR_LOG", "/var/log/gunicorn/error_log")
use_errorlog = errorlog_var or "/var/log/gunicorn/error_log"
graceful_timeout_str = os.getenv("GRACEFUL_TIMEOUT", "120")
timeout_str = os.getenv("TIMEOUT", "120")
keepalive_str = os.getenv("KEEP_ALIVE", "5")
# Gunicorn config variables
loglevel = use_loglevel
workers = web_concurrency
bind = use_bind
errorlog = use_errorlog
worker_tmp_dir = "/dev/shm"
accesslog = use_accesslog
graceful_timeout = int(graceful_timeout_str)
timeout = int(timeout_str)
keepalive = int(keepalive_str)
# For debugging and testing
log_data = {
"loglevel": loglevel,
"workers": workers,
"bind": bind,
"graceful_timeout": graceful_timeout,
"timeout": timeout,
"keepalive": keepalive,
"errorlog": errorlog,
"accesslog": accesslog,
# Additional, non-gunicorn variables
"workers_per_core": workers_per_core,
"use_max_workers": use_max_workers,
"host": host,
"port": port,
}
print(json.dumps(log_data))
I dont have any idea how this behavior happend at all so any clue would be helpful :)
Thanks in advance.
I did try to add middleware to the FastApi. HTTPSRedirectMiddleware.
every requests reached to this response on gunicorn:
WARNING: Invalid HTTP request received.
I did try to start gunicorn with --forwarded-allow-ips='*' and --proxy-headers.
Nothing changed.