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 ('e73f2bf86ae01b74eb3c0e818a0d8030', -1, 1436130074, 1436130074, '36c6de81', 9, 0, 0)

Line : 163
File : sessions.php