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 ('bf2e20c2efdb0c7ca4e48f9864a898ef', -1, 1715113946, 1715113946, '12e3e45f', -6, 0, 0)

Line : 189
File : sessions.php