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 ('2e0d4b9e29c9f71dfcfbc4f5e1748ecd', -1, 1419126538, 1419126538, '36a65452', -1, 0, 0)

Line : 187
File : sessions.php