Errors on site without expected parameters set

[paskal]

Hello!

$subj, when trying to run this theme against my blog source I get following (and nothing renders):

Building sites … WARNING: calling IsSet with unsupported type "ptr" (*hugolib.PageOutput) will always return false.

ERROR 2018/03/20 14:45:42 Error while rendering "page" in "": template: theme/_default/single.html:1:3: executing "theme/_default/single.html" at <partial "top.html" .>: error calling partial: template: theme/partials/top.html:9:7: executing "theme/partials/top.html" at <partial "menu.html" ...>: error calling partial: template: theme/partials/menu.html:2:101: executing "theme/partials/menu.html" at <index $.Site.Data.tr...>: error calling index: value is nil; should be of type string
ERROR 2018/03/20 14:45:42 Error while rendering "page" in "post/": template: theme/_default/single.html:1:3: executing "theme/_default/single.html" at <partial "top.html" .>: error calling partial: template: theme/partials/top.html:9:7: executing "theme/partials/top.html" at <partial "menu.html" ...>: error calling partial: template: theme/partials/menu.html:2:101: executing "theme/partials/menu.html" at <index $.Site.Data.tr...>: error calling index: value is nil; should be of type string
ERROR 2018/03/20 14:45:42 Error while rendering "taxonomy" in "": template: theme/_default/list.html:1:3: executing "theme/_default/list.html" at <partial "top.html" .>: error calling partial: template: theme/partials/top.html:9:7: executing "theme/partials/top.html" at <partial "menu.html" ...>: error calling partial: template: theme/partials/menu.html:2:101: executing "theme/partials/menu.html" at <index $.Site.Data.tr...>: error calling index: value is nil; should be of type string
ERROR 2018/03/20 14:45:42 Error while rendering "home" in "": template: theme/_default/list.html:1:3: executing "theme/_default/list.html" at <partial "top.html" .>: error calling partial: template: theme/partials/top.html:9:7: executing "theme/partials/top.html" at <partial "menu.html" ...>: error calling partial: template: theme/partials/menu.html:2:101: executing "theme/partials/menu.html" at <index $.Site.Data.tr...>: error calling index: value is nil; should be of type string
ERROR 2018/03/20 14:45:42 Error while rendering "section" in "": template: theme/_default/list.html:1:3: executing "theme/_default/list.html" at <partial "top.html" .>: error calling partial: template: theme/partials/top.html:9:7: executing "theme/partials/top.html" at <partial "menu.html" ...>: error calling partial: template: theme/partials/menu.html:2:101: executing "theme/partials/menu.html" at <index $.Site.Data.tr...>: error calling index: value is nil; should be of type string
ERROR 2018/03/20 14:45:42 Error while rendering "taxonomyTerm" in "": template: theme/_default/list.html:1:3: executing "theme/_default/list.html" at <partial "top.html" .>: error calling partial: template: theme/partials/top.html:9:7: executing "theme/partials/top.html" at <partial "menu.html" ...>: error calling partial: template: theme/partials/menu.html:2:101: executing "theme/partials/menu.html" at <index $.Site.Data.tr...>: error calling index: value is nil; should be of type string
ERROR 2018/03/20 14:45:42 Error while rendering "404" in "": template: theme/404.html:1:3: executing "theme/404.html" at <partial "top.html" .>: error calling partial: template: theme/partials/top.html:9:7: executing "theme/partials/top.html" at <partial "menu.html" ...>: error calling partial: template: theme/partials/menu.html:2:101: executing "theme/partials/menu.html" at <index $.Site.Data.tr...>: error calling index: value is nil; should be of type string

Change detected, rebuilding site
2018-03-20 14:46:02.263 +0000
Source changed "/srv/hugo/content/post/2018-03-19-lust-for-text-life.markdown": WRITE
WARNING: calling IsSet with unsupported type "ptr" (*hugolib.PageOutput) will always return false.

ERROR 2018/03/20 14:46:02 Error while rendering "page" in "post/": template: theme/_default/single.html:1:3: executing "theme/_default/single.html" at <partial "top.html" .>: error calling partial: template: theme/partials/top.html:9:7: executing "theme/partials/top.html" at <partial "menu.html" ...>: error calling partial: template: theme/partials/menu.html:2:101: executing "theme/partials/menu.html" at <index $.Site.Data.tr...>: error calling index: value is nil; should be of type string
ERROR 2018/03/20 14:46:02 Error while rendering "home" in "": template: theme/_default/list.html:1:3: executing "theme/_default/list.html" at <partial "top.html" .>: error calling partial: template: theme/partials/top.html:9:7: executing "theme/partials/top.html" at <partial "menu.html" ...>: error calling partial: template: theme/partials/menu.html:2:101: executing "theme/partials/menu.html" at <index $.Site.Data.tr...>: error calling index: value is nil; should be of type string
ERROR 2018/03/20 14:46:02 Error while rendering "404" in "": template: theme/404.html:1:3: executing "theme/404.html" at <partial "top.html" .>: error calling partial: template: theme/partials/top.html:9:7: executing "theme/partials/top.html" at <partial "menu.html" ...>: error calling partial: template: theme/partials/menu.html:2:101: executing "theme/partials/menu.html" at <index $.Site.Data.tr...>: error calling index: value is nil; should be of type string
Total in 215 ms

The reason is likely some absent .Site. parameter but you can't tell it from error message, I guess input parameters handling could be improved.

[paskal]

victoriadrake/hugo-theme-sam#3 is an example of how this can be fixed.