phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb5_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a3f7ef77e2f8bb7538d2404e0065a4e4', -1, 1664631373, 1664631373, '12d0bb80', -1, 0, 0)

Line : 187
File : sessions.php