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 ('f1f1e2d7ee4833f155caea9e8a9b3795', -1, 1566093672, 1566093672, '12ce0d27', 18, 0, 0)

Line : 187
File : sessions.php