Deduplication crashes Shiny if there are no duplicates

[LukasWallrich]

When I use the tests/testthat/data/1_WoS.ris in the Shiny app (locally and online) and try to de-duplicate it, the app crashes with Warning: Error in ASySD::dedup_citations: object 'unique_citations_with_metadata' not found

Outside the Shiny app, dedup_citations() works on that file. Will try to investigate.

[LukasWallrich]

Actually, that is an issue in ASySD - I will open it there, but keep it open here as well, as it currently breaks the app if users include files without duplicates (admittedly a rare use case)

[LukasWallrich]

Added a PR to ASySD that should resolve this once Kaitlyn merges it: camaradesuk/ASySD#43

[TNRiley]

Just ran this to check and still crashing with a single record upload, but worked fine with two that had no duplicates.
I don't think that this is an issue any longer.