503 error ?

[parisien]

Hello.

i updated pfsense to 2.0 this afternoon

and a lot of time when i go on the web gui i have

503 internal error and
Warning: fopen(/tmp/config.lock): failed to open stream: Device not configured in /etc/inc/util.inc on line 123 Warning: flock() expects parameter 1 to be resource, null given in /etc/inc/util.inc on line 134 Warning: fclose(): supplied argument is not a valid stream resource in /etc/inc/util.inc on line 135 Warning: fopen(/tmp/config.lock): failed to open stream: Device not configured in /etc/inc/util.inc on line 123 Warning: flock() expects parameter 1 to be resource, null given in /etc/inc/util.inc on line 134 Warning: fclose(): supplied argument is not a valid stream resource in /etc/inc/util.inc on line 135

Do you know why ?

(i also lose very very often the connection on wifi).

Thank you.

Edit :

now i also have that on the login page :

Warning: fopen(/tmp/config.lock): failed to open stream: Device not configured in /etc/inc/util.inc on line 123 Warning: flock() expects parameter 1 to be resource, null given in /etc/inc/util.inc on line 134 Warning: fclose(): supplied argument is not a valid stream resource in /etc/inc/util.inc on line 135 Warning: session_start(): open(/var/tmp//sess_5fa98e10687d0de2a7b5cec8d016ce3e, O_RDWR) failed: No space left on device (28) in /etc/inc/auth.inc on line 1209
Username:

Password:

Enter username and password to login.

Warning: Unknown: open(/var/tmp//sess_5fa98e10687d0de2a7b5cec8d016ce3e, O_RDWR) failed: No space left on device (28) in Unknown on line 0 Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct () in Unknown on line 0

[jimp]

Sounds like your /var/ and/or /tmp/ slices are full.