Any Time I can't validate my site
www.hiwebdesign.de.
They wrote:
"A fatal error occurred when attempting to transcode the character encoding of the document. Either we do not support this character encoding ("none") yet, or you have specified a non-existent character encoding (often a misspelling).
The error was: Encoding not supported."
The Validator can't find the character encoding automatically. If I do this manually then its working.
But the, I have 1 Error and 2 Warnings.
This are:
Warnings:
1.Character Encoding Override in effect!
The detected character encoding "none" has been suppressed and "utf-8" used instead.
2.Warning Character Encoding mismatch!
The character encoding specified in the HTTP header (none) is different from the value in the <meta> element (utf-

. I will use the value from the HTTP header (utf-

for this validation.
Validation Output: 1 Error
Error Line 108, Column 10: ID "current" already defined
<li id="current" class="active item-435 level1 first "><a class="level1" href…
An "id" is a unique identifier. Each time this attribute is used in a document it must have a different value. If you are using this attribute as a hook for style sheets it may be more appropriate to use classes (which group elements) than id (which are used to identify exactly one element).
Info Line 55, Column 10: ID "current" first defined here
<li id="current" class="active item-435 level1 first "><a class="level1" href…
How can I solve this error and warnings?
Thanks