After an Unraid (6.8.3) manual power down so I could move my server (HP DL380P) in the rack I cannot access the webgui upon reboot. It seems to load to the Unraid OS (headless) just fine. I can access and perform most cli commands. I see mac address and IP on my switch and can even ping, but I cannot browse to it. Even when booting to GUI OS (both regular and safe mode) I cannot connect, despite networking seeming to be fine. I am even able to access Unraid documentation and ping out. 

 

Attached is my diagnostic file (which I had to get from cli) 

unraid.jerry-diagnostics-20200529-0509.zip

May 29 04:38:25 unraid emhttpd: shcmd (42): /etc/rc.d/rc.nginx start
May 29 04:38:25 unraid root: unable to load certificate
May 29 04:38:25 unraid root: 23032187303744:error:0909006C:PEM routines:get_name:no start line:crypto/pem/pem_lib.c:745:Expecting: TRUSTED CERTIFICATE
May 29 04:38:25 unraid root: Starting Nginx server daemon...
May 29 04:38:25 unraid root: nginx: [emerg] cannot load certificate "/etc/ssl/certs/unraid_bundle.pem": PEM_read_bio_X509_AUX() failed (SSL: error:0909006C:PEM routines:get_name:no start line:Expecting: TRUSTED CERTIFICATE) May 29 04:38:25 unraid emhttpd: shcmd (42): exit status: 1

I believe this could be my problem.. Does anyone know how to fix this? 

SOLVED: I was able to delete the contents of the SSL folder on the USB and it re-generated the certs on reboot. 
 

rm -r /boot/config/ssl/*

I had the same problem and solved it with your method.

thank you！