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 ('d5c11f25cc0d37ead81239b5f4a0038e', -1, 1713885633, 1713885633, '127783b2', 6, 0, 0)

Line : 187
File : sessions.php