phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'bfa2bb1be6b3e0db67ea638a241ad565' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('bfa2bb1be6b3e0db67ea638a241ad565', -1, 1768467839, 1768467839, 'd849d868', -4, 0, 0)

Line : 187
File : sessions.php