Template &1 could not be found in folder list &2.
&1 - The template, which does not exist in any of the folders specified by
the folder list
&2 - The identification of the folder list
A function needs the template &1 to create the HTML page. However, the template is not present in any of the folders specified by the folder list.
Check whether the folder list is supposed to be used.
Add extra folders to the folder list or copy the template to one of the folders
in the folder list.
This will most often happen either during development - or after deploying new functions, where all of the templates have not been deployed correctly.