The byte stream was erroneous according to the character encoding that was inherited from the parent document. The character encoding needs to be declared in the Content-Type HTTP header, using a meta tag, or using a byte order mark.
Byte-jarioa ez da zuzena dokumentu-gurasotik heredatu den karaktere-kodeketaren arabera. Content-Type HTTP goiburua, meta etiketa edo byten ordena-marka (BOM) erabili behar da karaktere-kodeketa zehazteko.