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 ('0974ba639e5d00f4e2cb7dbecd183c89', -1, 1714515496, 1714515496, '12e03f57', -8, 0, 0)

Line : 187
File : sessions.php