Single Pages - No file found to render template with handle "unknown template"

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After updating a local Docker container from 8.5.2 to 8.5.4, trying to access my single pages leads to the error above. Anyone have any ideas?

khalverson
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EvanCooper replied on at Permalink Reply
EvanCooper
Did you have your single page files set up in the concrete5 core directory and they got blown away by the docker update?
khalverson replied on at Permalink Reply
khalverson
No, they were installed by a custom package. So they should exist in packages/{package_name}/single_pages/single_page.php

They do not exist in the core directory.
EvanCooper replied on at Permalink Reply
EvanCooper
I see - one other thing is you can check the DB in the Pages table and see if the single page has the pkgID correctly associated with it. Or that the package itself is still installed.