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 ('6437e7c29cc8a70fb0c3e9ef0c399a01', -1, 1715156747, 1715156747, '12be9c50', -4, 0, 0)

Line : 189
File : sessions.php