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 ('d87ffdbcd3039aa5b22b5588d2ba4ea1', -1, 1762817747, 1762817747, '126109a9', -7, 0, 0)

Line : 193
File : sessions.php