phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('f66f44e168bf240356bb15b67489138e', -1, 1713531743, 1713531743, '12de6f18', 7, 0, 0)

Line : 187
File : sessions.php