don't crash the chapter when nodes are corrupted
don't crash the chapter when nodes are corrupted

luanlv/lila,luanlv/lila,arex1337/lila,luanlv/lila,arex1337/lila,luanlv/lila,luanlv/lila,arex1337/lila,arex1337/lila,arex1337/lila,luanlv/lila,luanlv/lila,arex1337/lila,arex1337/lila