I used supervisor,but my browser got 404 error

where can I find which step is error?

there is the workerbeat.error.log:
worker: Cold shutdown (MainProcess)

worker: Warm shutdown (MainProcess)
/home/frappe/frappe-bench/env/local/lib/python2.7/site-packages/celery/platforms.py:766: RuntimeWarning: You are running the worker with superuser privileges, which is
absolutely not recommended!

Please specify a different user using the -u option.

User information: uid=0 euid=0 gid=0 egid=0

uid=uid, euid=euid, gid=gid, egid=egid,
[2015-04-15 11:36:28,014: WARNING/MainProcess] celery@iZ25r0m1yohZ ready.

worker: Cold shutdown (MainProcess)
[2015-04-15 11:39:42,812: WARNING/MainProcess] celery@iZ25r0m1yohZ ready.

worker: Cold shutdown (MainProcess)
[2015-04-15 11:47:06,180: WARNING/MainProcess] celery@iZ25r0m1yohZ ready.

my config:
[program:frappe-web]
command=/home/frappe/frappe-bench/env/bin/gunicorn -b 0.0.0.0:8000 -w 2 -t 120 frappe.app:application
autostart=true
autorestart=true
stopsignal=QUIT
stdout_logfile=/home/frappe/frappe-bench/logs/web.log
stderr_logfile=/home/frappe/frappe-bench/logs/web.error.log
user=frappe
directory=/home/frappe/frappe-bench/sites

[program:frappe-worker]
command=/home/frappe/frappe-bench/env/bin/python -m frappe.celery_app worker
autostart=true
autorestart=true
stopsignal=QUIT
stdout_logfile=/home/frappe/frappe-bench/logs/worker.log
stderr_logfile=/home/frappe/frappe-bench/logs/worker.error.log
user=frappe
directory=/home/frappe/frappe-bench/sites

[program:frappe-workerbeat]
command=/home/frappe/frappe-bench/env/bin/python -m frappe.celery_app beat -s test.schedule
autostart=true
autorestart=true
stopsignal=QUIT
stdout_logfile=/home/frappe/frappe-bench/logs/workerbeat.log
stderr_logfile=/home/frappe/frappe-bench/logs/workerbeat.error.log
user=frappe
directory=/home/frappe/frappe-bench/sites

[program:redis-cache]
command=/usr/bin/redis-server /home/frappe/frappe-bench/config/redis.conf
autostart=true
autorestart=true
stopsignal=QUIT
stdout_logfile=/home/frappe/frappe-bench/logs/redis.log
stderr_logfile=/home/frappe/frappe-bench/logs/redis.error.log
user=frappe
directory=/home/frappe/frappe-bench/sites

[group:frappe]
programs=frappe-web,frappe-worker,frappe-workerbeat

Remove the linked configuration for supervisor and nginx and use

sudo bench setup production frappe

I tried it, also 404 error

I know, I should be able to access port 80, had previously been accessed 8000

thanks

Any clue from the logs?