phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ac28f65c0e4dea31a88bf04afd4d0255' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('ac28f65c0e4dea31a88bf04afd4d0255', -1, 1767240264, 1767240264, 'd849d893', 2, 0)

Line : 180
File : /www/includes/sessions.php