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 ('082d5688ea4f7f9b0783299f045e5025', -1, 1508673204, 1508673204, '36a7cab8', 14, 0, 0)

Line : 187
File : sessions.php