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 ('19ab74f9bfc31aa5c1e56de05e676075', -1, 1511587547, 1511587547, '36e0661a', 3, 0, 0)

Line : 189
File : sessions.php