phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '51b04317f22be5c90cc6bafa47974bf4' 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 ('51b04317f22be5c90cc6bafa47974bf4', -1, 1769603442, 1769603442, 'd849d86e', 1, 0, 0)

Line : 187
File : sessions.php