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 ('3af1e4ec5b7495d4c027f17642ff97e8', -1, 1513081099, 1513081099, '36eaff1d', 17, 0, 0)

Line : 211
File : sessions.php