Hi Cindy,
One of our developers (Radda) has done some detective work on this issue for you, and it turns out I was wrong - it's not a custom theme issue. In fact, it is unfortunately a bug, resulting from an over-correction when trying to address a previous bug!
I have filed an issue ticket here:
Previously, the report links would always be available, even if there were no relevant results for them - i.e. no storage information, and/or no files or items at lower levels. Meaning you would either trigger an error when trying to generate the report, or you'd end up with blank reports.
We tried to fix this - and did! But in the process, over-corrected. Now, instead of checking if there are storage locations on the target description OR at lower levels from that target description, the report links expect that there MUST be a storage location on the CURRENT LEVEL for the generation links to be present.
I have passed this issue to the Maintainers for their review - hopefully we can address it soon. In the meantime: it's a bit ugly, but your archivists could add a temporary fake location to the Series level (create a box with a name that is obviously just for this purpose for example) just to get the report links, generate them, and then delete the temporary location link again?
Apologies for the confusion!