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 ('360b1bd0c4bd2acdc25c4b3be9df73f7', -1, 1503059930, 1503059930, '3651471f', 2, 0, 0)

Line : 189
File : sessions.php