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 ('256f3fe1c7688dc100f1b40a1fb3bb6c', -1, 1571354726, 1571354726, '0355f57e', 3, 0, 0)

Line : 187
File : sessions.php