phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21dca6d4d2654dfb4c8935030f1df528' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('21dca6d4d2654dfb4c8935030f1df528', -1, 1755807265, 1755807265, 'd849d8b9', -9, 0)

Line : 180
File : /www/includes/sessions.php