Need help interpreting an error output

Hi,

 

wenn I run the following command for my docbook5 (relaxng) documents:

 

xsltproc --xinclude --output Test.html /usr/share/xml/docbook/xsl-ns-stylesheets-1.79.2/html/docbook.xsl darktable.xml  

I get following error output:

 

ERROR: xref linking to export_selected has no generated link text. 
Error: no ID for constraint linkend: "export_selected". 
ERROR: xref linking to lighttable_chapter has no generated link text. 
Error: no ID for constraint linkend: "lighttable_chapter". 
ERROR: xref linking to import has no generated link text. 
Error: no ID for constraint linkend: "import". 
ERROR: xref linking to export_selected has no generated link text. 
Error: no ID for constraint linkend: "export_selected". 
Error: no ID for constraint linkend: "image_information". 
ERROR: xref linking to collect_images has no generated link text. 
Error: no ID for constraint linkend: "collect_images". 
ERROR: xref linking to recently_used_collections has no generated link text. 
Error: no ID for constraint linkend: "recently_used_collections". 
ERROR: xref linking to selected_images has no generated link text.

 

What does it exactly mean?

In the different documents I use for example the following commands:

 

./lighttable/panels/geotagging.xml:    xml:id="geotagging"> 
./lighttable/panels/geotagging.xml:  <sect3 xml:id="geotagging_usage"> 

./lighttable/panels/panels.xml:  <xi:include href="" xmlns:xi="http://www.w3.org/2001/XInclude"/> 

./map/map.xml:      <keyword>geotagging</keyword> 
./map/map.xml:      (see <xref linkend="geotagging"/>).

 

Thanks for your help

Pierre