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 ('a169df664d93f64adf6ce2a8008d8e8b', -1, 1566799604, 1566799604, '22ef9e6b', 15, 0, 0)

Line : 189
File : sessions.php