fix schema page without subject
fix schema page without subject

KhanovaSkola/khanovaskola-v3,KhanovaSkola/khanovaskola-v3,KhanovaSkola/khanovaskola-v3,KhanovaSkola/khanovaskola-v3,KhanovaSkola/khanovaskola-v3,KhanovaSkola/khanovaskola-v3