Category:CatAutoTOC generates no TOC

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CatAutoToc effect Pages %
No TOC 12 Lua error in package.lua at line 80: module 'Module:Sortkey' not found.
Standard {{Category TOC}} 1 Lua error in package.lua at line 80: module 'Module:Sortkey' not found.
{{Large category TOC}} 0 Lua error in package.lua at line 80: module 'Module:Sortkey' not found.
Total 13
Purge this page to update the totals.

Categories which use {{CatAutoTOC}}, grouped by what CatAutoToc does on each page:

Templates which transclude {{CatAutoTOC}} are categorised in

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