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 ('7fde032eafd24d50b16da7f2f4d27560', -1, 1508463247, 1508463247, '36a7fa40', 3, 0, 0)

Line : 186
File : sessions.php