ERPNext V7 to V10 Successful But Sorry we will be back soon

We have been using V7 since a year now.
I have successfully upgraded it to V10 after many errors.
Everything is upgraded but when I try accessing the page it shows Sorry We will be Back soon.

When i run same site on serve port. 9090. It works fine with V10 upgraded.

I tried assigning different port to my site but still it doesnt come up. It is only coming up on serve port command.
bench --site [site_name] serve 9090

Anybody aware of what went wrong after the update from V7 to V10?

You should post the full traceback you get in the bench terminal console. It is really hard to guess what went wrong without any logs.

There is no error. while updating from V7 to V10.
I tried bench setup nginx
bench setup supervisor
all ok.

then bench restart.
Still it shows sorry we will be back soon.

When I do Bench --site 9too9 serve --port 9898

It starts working on port 9898.

Any Idea? Till then I will look into Logs

sudo supervisorctl status

9t9erp-redis:9t9erp-redis-cache FATAL Exited too quickly (process log may have details)
9t9erp-redis:9t9erp-redis-queue FATAL Exited too quickly (process log may have details)
9t9erp-redis:9t9erp-redis-socketio FATAL Exited too quickly (process log ma y have details)
9t9erp-web:9t9erp-frappe-web RUNNING pid 1872, uptime 15:54:25
9t9erp-web:9t9erp-node-socketio FATAL Exited too quickly (process log may have details)
9t9erp-workers:9t9erp-frappe-default-worker-0 RUNNING pid 1866, uptime 15:54: 25
9t9erp-workers:9t9erp-frappe-long-worker-0 RUNNING pid 1869, uptime 15:54:25
9t9erp-workers:9t9erp-frappe-schedule RUNNING pid 1870, uptime 15:54:25
9t9erp-workers:9t9erp-frappe-short-worker-0 RUNNING pid 1868, uptime 15:54:25
frappe-bench-redis:frappe-bench-redis-cache RUNNING pid 1831, uptime 15:54:25
frappe-bench-redis:frappe-bench-redis-queue RUNNING pid 1830, uptime 15:54:25
frappe-bench-redis:frappe-bench-redis-socketio RUNNING pid 1845, uptime 15:54 :25
frappe-bench-web:frappe-bench-frappe-web RUNNING pid 27589, uptime 0:00:05
frappe-bench-web:frappe-bench-node-socketio RUNNING pid 1848, uptime 15:54:25
frappe-bench-workers:frappe-bench-frappe-default-worker-0 RUNNING pid 1858, u ptime 15:54:25
frappe-bench-workers:frappe-bench-frappe-long-worker-0 RUNNING pid 1864, upti me 15:54:25
frappe-bench-workers:frappe-bench-frappe-schedule RUNNING pid 1863, uptime 15 :54:25
frappe-bench-workers:frappe-bench-frappe-short-worker-0 RUNNING pid 1865, upt