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 ('8fbaffc6b30f39bc275e74c1f302abc0', -1, 1406204349, 1406204349, '36c4c6f1', -4, 0, 0)

Line : 172
File : sessions.php