phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a8f84bb535af9ec6d63d346d1f98f767' 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 ('a8f84bb535af9ec6d63d346d1f98f767', -1, 1714212006, 1714212006, '12bf5420', 4, 0, 0)

Line : 187
File : sessions.php