phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ac6cff407f943c90fc6845f6d73f2af2' 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 ('ac6cff407f943c90fc6845f6d73f2af2', -1, 1714867286, 1714867286, 'c0a80201', 31, 0, 0)

Line : 187
File : sessions.php