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 ('d9bba16a12b28163a5f81f64b3d426b0', -1, 1518897252, 1518897252, '36eb3969', -6, 0, 0)

Line : 211
File : sessions.php