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 ('aa3230bb5c56f9fb7f40460543c5ff8b', -1, 1529596766, 1529596766, '1714ec3d', 25, 0, 0)

Line : 219
File : sessions.php