NGINX gives 502 error from browsers but not from Postman - django

Question

I've got a Django application running on Azure App Service using NGINX.
My nginx.conf file is as follow:
user nginx;
worker_processes 1;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
}
http {
include /etc/nginx/mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
sendfile on;
keepalive_timeout 65;
fastcgi_max_temp_file_size 0;
fastcgi_buffers 128 2048k;
fastcgi_buffer_size 2048k;
proxy_buffer_size 128k;
proxy_buffers 4 256k;
proxy_busy_buffers_size 256k;
server {
listen 8000;
location / {
include uwsgi_params;
uwsgi_pass unix:///tmp/uwsgi.sock;
}
location /static {
alias /app/staticfiles;
}
}
}
daemon off;
Everything works fine, except for one particular API where I include in the header some token (typical bearer token) and it's returning a 502 error from Chrome (in the network tab)
However, when I try to call this from Postman, it's returning the data correctly.
What could be possibly wrong here?

Answer 1

Thanks to #Selcuk's suggestion. I've managed to fix the above error by increasing the buffer-size in iwsgi.ini file
# uwsgi.ini file
buffer-size = 32768