Fix:
https://servizi.linux.it/
> 502 Bad Gateway
== Troubleshooting ==
```
$ tail -f /opt/sandstorm/var/log/mongo.log
2021-05-12T09:33:31.949+0000 [initandlisten]
2021-05-12T09:33:31.949+0000 [initandlisten] ERROR: Insufficient free space for journal files
2021-05-12T09:33:31.949+0000 [initandlisten] Please make at least 422MB available in /var/mongo/journal or use --smallfiles
```
```
$ df -lh
Filesystem Size Used Avail Use% Mounted on
udev 1,9G 0 1,9G 0% /dev
tmpfs 386M 40M 347M 11% /run
/dev/sda1 38G 36G 320M 100% /
tmpfs 1,9G 4,0K 1,9G 1% /dev/shm
tmpfs 5,0M 0 5,0M 0% /run/lock
tmpfs 1,9G 0 1,9G 0% /sys/fs/cgroup
tmpfs 386M 0 386M 0% /run/user/0
```