Unallowed + sign in id´s

Result: 9 Errors / 0 Warnings

line 324 column 68 - Fehler: character "+" is not allowed in the value of attribute "id"
line 325 column 47 - Fehler: character "+" is not allowed in the value of attribute "for"
line 325 column 97 - Fehler: character "+" is not allowed in the value of attribute "id"
line 328 column 67 - Fehler: character "+" is not allowed in the value of attribute "id"
line 329 column 47 - Fehler: character "+" is not allowed in the value of attribute "for"
line 329 column 96 - Fehler: character "+" is not allowed in the value of attribute "id"
line 332 column 68 - Fehler: character "+" is not allowed in the value of attribute "id"
line 333 column 47 - Fehler: character "+" is not allowed in the value of attribute "for"
line 333 column 96 - Fehler: character "+" is not allowed in the value of attribute "id"

For example:

<div class="form-item" id="edit-rdf-format-rdf+json-wrapper">
 <label class="option" for="edit-rdf-format-rdf+json"><input type="radio" id="edit-rdf-format-rdf+json" name="rdf_format" value="rdf+json"   class="form-radio" /> </label>

</div>

Please change the + in _ or - to get rid of that

Best Regards
Torsten Zenk