phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sub_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('738000be7e09e7236966e1e88b622439', -1, 1714517631, 1714517631, '12bc1438', 0, 0, 0)

Line : 187
File : sessions.php