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 ('f683c08ba8be584b17924972e1d12ddc', -1, 1490827612, 1490827612, '36c596ff', 17, 0, 0)

Line : 189
File : sessions.php