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 ('f6c651b2f5b614c8c1e14ae0ada38f64', -1, 1529617298, 1529617298, '36e0ebb7', -4, 0, 0)

Line : 219
File : sessions.php