phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6d1df450362c9752c4042de1716401d0', -1, 1419290689, 1419290689, '3691fc55', -1, 0, 0)

Line : 187
File : sessions.php