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 ('b5899315a89990f0517c82d262f4e01e', -1, 1490912979, 1490912979, '36a798b1', -4, 0, 0)

Line : 172
File : sessions.php