phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '87888edc0b13acc6ff3655aeb3aab97f' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('87888edc0b13acc6ff3655aeb3aab97f', -1, 1772301402, 1772301402, 'd849d834', 2, 0)

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