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 ('51e594749b490f981ed9d2d6eeb0d768', -1, 1715109747, 1715109747, '1275c4d9', 4, 0, 0)

Line : 189
File : sessions.php