[Bug] Physical + EPUB: Can’t Delete EPUB Independently.

[jolpadgett]

What went wrong?

My workflow, which worked as I expected before v3.0:

After reading a book, I use “mark as physical” to get a physical + epub record for the same entry.
Next I use “delete file formats” to delete the epub.

My goal is to have a historical record of books read but not keep the epub any longer.

How can we reproduce it?

1. Mark an existing book (epub) as physical.
2. Attempt to delete just the epub using the delete file formats option from the 3 dot menu on the book details page.

What Build of Grimmory are you on?

Stable

Your setup

• 3.0
• iPad Pro
• Safari

Screenshots or error messages (optional)

[booklore] 2026-04-23T16:54:06.610306883Z 2026-04-23T12:54:06.609-04:00 DEBUG 1 --- [booklore-api] [at-handler-3457] o.b.c.l.filter.RequestLoggingFilter      : Before request [DELETE /api/v1/books/842/files/38, headers=[Host:"booklore.joelpadgett.us", User-Agent:"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.4 Safari/605.1.15", Accept:"application/json, text/plain, */*", Accept-Encoding:"gzip, deflate, br, zstd", Accept-Language:"en-US,en;q=0.9", Origin:"https://booklore.joelpadgett.us", Priority:"u=3, i", Referer:"https://booklore.joelpadgett.us/book/842?tab=view", Sec-Fetch-Dest:"empty", Sec-Fetch-Mode:"cors", Sec-Fetch-Site:"same-origin", X-Forwarded-Host:"booklore.joelpadgett.us", X-Forwarded-Port:"443", X-Forwarded-Proto:"https", X-Forwarded-Server:"f59fd7eb15e5", X-Real-Ip:"10.0.0.77", Authorization:"masked"]]
[booklore] 2026-04-23T16:54:06.619660521Z 2026-04-23T12:54:06.619-04:00  WARN 1 --- [booklore-api] [at-handler-3457] o.b.exception.GlobalExceptionHandler     : Illegal argument: Primary book file cannot be processed as an additional file: 38
[booklore] 2026-04-23T16:54:06.621020063Z 2026-04-23T12:54:06.620-04:00 DEBUG 1 --- [booklore-api] [at-handler-3457] o.b.c.l.filter.RequestLoggingFilter      : After request [DELETE /api/v1/books/842/files/38, headers=[Host:"booklore.joelpadgett.us", User-Agent:"Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.4 Safari/605.1.15", Accept:"application/json, text/plain, */*", Accept-Encoding:"gzip, deflate, br, zstd", Accept-Language:"en-US,en;q=0.9", Origin:"https://booklore.joelpadgett.us", Priority:"u=3, i", Referer:"https://booklore.joelpadgett.us/book/842?tab=view", Sec-Fetch-Dest:"empty", Sec-Fetch-Mode:"cors", Sec-Fetch-Site:"same-origin", X-Forwarded-Host:"booklore.joelpadgett.us", X-Forwarded-Port:"443", X-Forwarded-Proto:"https", X-Forwarded-Server:"f59fd7eb15e5", X-Real-Ip:"10.0.0.77", Authorization:"masked"]]
[booklore] 2026-04-23T16:54:41.118977959Z 2026-04-23T12:54:41.118-04:00 DEBUG 1 --- [booklore-api] [at-handler-3460] 

Before submitting

• I've searched existing discussions and this hasn't been reported yet
• I've reviewed this report and have completed it as fully as I can