phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4fc11cf5f9683955fd1b9e536e819473' 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 ('4fc11cf5f9683955fd1b9e536e819473', -1, 1743926971, 1743926971, '12bc9f42', -9, 0, 0)

Line : 187
File : sessions.php