phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '57aabaeefae55ed440b3326e003a4e47' 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 ('57aabaeefae55ed440b3326e003a4e47', -1, 1771650151, 1771650151, 'd849d890', 1, 0, 0)

Line : 187
File : sessions.php