phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a646d52bc4983844b19634118c1c8c7f' 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 ('a646d52bc4983844b19634118c1c8c7f', -1, 1714305469, 1714305469, 'c0a80201', -4, 0, 0)

Line : 187
File : sessions.php