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 ('8e92bc6e4a7ac0aa66e617c371a694b2', -1, 1715155715, 1715155715, '030c9b94', 8, 0, 0)

Line : 189
File : sessions.php