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 ('9cd428e30e0c9ee84ac0a0bb278cc6bd', -1, 1542753803, 1542753803, '365207e7', -9, 0, 0)

Line : 189
File : sessions.php