Please help with explaining this problem: and possibly how to solve it thanks.
No Character Encoding Found! Falling back to UTF-8.
I was not able to extract a character encoding labeling from any of the valid sources for such information.
Without encoding information it is impossible to reliably validate the document.
I'm falling back to the "UTF-8" encoding and will attempt to perform the validation,
but this is likely to fail for all non-trivial documents.
Read the FAQ entry on character encoding for more details and pointers on how to fix this problem with your document.
Sorry! This document can not be checked.
Sorry, I am unable to validate this document