phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a0521ffe4ca955f322b85c2f46cd7b6e' 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 ('a0521ffe4ca955f322b85c2f46cd7b6e', -1, 1755104708, 1755104708, 'd849d8a6', 40, 0, 0)

Line : 187
File : sessions.php