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 ('713fe3c20396a2259861b001f4e35021', -1, 1711723863, 1711723863, '36f2a5ff', -2, 0, 0)

Line : 187
File : sessions.php