I was trying to print an order collection array (\Magento\Sales\Model\ResourceModel\Order\CollectionFactory), but it never gets printed, I know the reason.
Now when I reload my browser, I get a
503 Service Temporarily Unavailable everywhere, frontend and backend.
There is no
maintenance.flag or even
.maintenance.flag anywhere in var/ folder.
Mode - developer, Hosted on NGINX, plesk (other sites on same server working). I tried deleting cache, indexing, static contents deploy everything.
The error in /var/log/nginx/error.log is:
2018/02/22 11:36:56 [notice] 9870#0: signal process started 2018/02/22 11:36:56 [error] 9870#0: open() "/var/run/nginx.pid" failed (2: No such file or directory)