phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('b5835c7f0b50b9ed3cd0479f4744effd', -1, 1715107806, 1715107806, '12df1505', -6, 0, 0)

Line : 189
File : sessions.php