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 ('09a836ef7cc1ba5cb5db7a25dc2b1dd5', -1, 1550332960, 1550332960, '3692e35c', -8, 0, 0)

Line : 186
File : sessions.php