phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '721b5c4e956631cdd521b3dc646f877e' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('721b5c4e956631cdd521b3dc646f877e', -1, 1715135097, 1715135097, '0390fc8c', -1, 0, 0)

Line : 187
File : sessions.php