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 ('f1e307317bb2aa01fc34da84b4f10d2c', -1, 1751112422, 1751112422, 'd849d889', -16, 0, 0)

Line : 189
File : sessions.php