Weird connection issue

Hello all.

I recently setup my nextcloud server and it has been doing well for about 2 weeks. Recently I’ve been getting this weird issue where I suddenly get connection closed when using the Windows client.

On top of that, it completely locks me out of my raspberry pi 3. I can’t even ssh into it using its local ip address.

Here example of what happends.

Weirdly enough there’s nothing in the admin logs.

Only way to fix it is to pull the plug.

Any ideas on how to narrow down my search?

Thanks in advance

Can you still ping your device?


Also noticed the green light stopped blinking so I think it crashed somehow.

So reboot it and ssh into it and check the log files of your webserver and check disk space and use top and other tools.