phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '963569c2073a667773b3636f5a79938d' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('963569c2073a667773b3636f5a79938d', -1, 1757047863, 1757047863, 'd849d861', 18, 0, 0)

Line : 187
File : sessions.php