single.html can not render

[xwydq]

single.html can not render success by

<p class="terms">
  {{ range $i := (slice "categories" "tags") }}
  {{ with ($.Param $i) }}
  {{ $i | title }}: 
  {{ range $k := . }}
  <a href='{{ relURL (print "/" $i "/" $k | urlize) }}'>{{$k}}</a> 
  {{ end }}
  {{ end }}
  {{ end }}
</p>

format

error message:

Building sites … ERROR 2018/02/07 17:03:32 Error while rendering "page" in "note/": template: theme/_default/single.html:10:17: executing "theme/_default/single.html" at <.>: range can't iterate over HTML

[yihui]

Your Hugo version? Reproducible example?

[xwydq]

$ hugo version
Hugo Static Site Generator v0.35 linux/amd64 BuildDate: 2018-01-31T10:44:43Z

The version can not support this template syntax？

[yihui]

I remember I have been testing this theme since Hugo 0.17, and I have never seen this problem.

I asked for a minimal reproducible example, and you didn't provide it.

[casperl]

For future reference: I had this error and the problem had to do with taxonomies that did not exist which is why the page compiler reports the "range cannot iterate over HTML". I renamed a front matter taxonomy term (as in merke = ["A", "B", "C"]) to a different name and changed the respective pages' front matter. But it left dangling links in the body text to a non-existent taxonomy item [MyLink](/merke/mytag). I then performed a recursive search through everything in /content for all posts containing the incorrect taxonomy term (using the Linux ack command) and corrected this.

When designing a theme or shortcode, care must be taken not to link to taxonomy references that do not exist.