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 ('a5435e667f2516137a79405f71d4dd70', -1, 1412158254, 1412158254, '36c62e73', 0, 0, 0)

Line : 187
File : sessions.php