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 ('b32aa67f1c4e70f7e9c858b39cad1fa9', -1, 1547727027, 1547727027, '22e0663c', 18, 0, 0)

Line : 189
File : sessions.php