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 ('92a79735ab6f9d14d956a3f1232406ad', -1, 1714517341, 1714517341, '038595a8', -8, 0, 0)

Line : 187
File : sessions.php