The comments are not close. If you comment a paragraph or lines you must use square brackets:
<!-- [styles not used for now/>
<xsl:call-template name="applyStyleId"/>
<if textline without words then we create a new String with the total textline as CONTENT ]-->
see the line: https://github.com/Transkribus/TranskribusCore/blob/f185e3df59ca3634ff56390d685373fbbcfe1401/src/main/resources/xslt/PageToAlto.xsl#L327
The comments are not close. If you comment a paragraph or lines you must use square brackets: