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 ('c05cbedb7d0e5fbe0eca1883f17bd173', -1, 1566799705, 1566799705, '22ef9e6b', 15, 0, 0)

Line : 189
File : sessions.php