Received this error after booting my system yesterday. Tried rebooting my system and it went a way, but it is back again.

I have replaced the boot drive, but it is back. Any advice would be appreciated

 

Warning/Error message below:

 

Warning: session_write_close(): write failed: No space left on device (28) in /usr/local/emhttp/plugins/dynamix/include/.login.php on line 218

Warning: session_write_close(): Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/var/lib/php) in /usr/local/emhttp/plugins/dynamix/include/.login.php on line 218

Warning: Cannot modify header information - headers already sent by (output started at /usr/local/emhttp/plugins/dynamix/include/.login.php:218) in /usr/local/emhttp/plugins/dynamix/include/.login.php on line 222

Ok, so found the solution and it was all my bad.

With the help from a seasoned user, we found a few things wrong.

The first was that a docker was writing into my /tmp folder, then my cache preferences were all wrong (and a few other settings with my plex, but not relevant to this fix). 

 

The solution was to remove the offending docker writing in /tmp, opening my appdata folder (use whatever you would like, I made mine exportable and used windows explorer) and clearing out the app data of the offending docker. And side note to anyone who may have a cache drive, remember to double check those settings and schedule the mover.

 

So far we have been running with no issues and I am very grateful to the members of the community that helped me out with this!