phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO BP_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6fb09ad9b61abd8a27cf7bcfd17a3904', -1, 1763232652, 1763232652, '12610e53', -10, 0, 0)

Line : 193
File : sessions.php