phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a886ab9dceabc7c103bf7d87575d0ca2' 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 ('a886ab9dceabc7c103bf7d87575d0ca2', -1, 1767412514, 1767412514, 'd849d8a2', 3, 0, 0)

Line : 187
File : sessions.php