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nephtys59 · 02-15-2025, 02:51 PM

Hi,
I have a huge calibre library of over 100.000 ebooks, all covers are there and size is lower than 300 kb. The library is synchronized with pcloud daily. Calibre sync refuses to sync missing covers (41 covers in total), either with a full update of the library, or with "download missing covers" or redownloading single cover for each book. The error is always the same:

NoSuchMethodError: The getter "first" was called on null. Receiver null.

I have more than enough space available on both the SD card and internal memory. How do I get Calibre Sync to download those covers?
I have already tried a full maintenance of the metadata.db and deleting completely the library on Calibre Sync and redownloading it in full. Any solution from the app creator?
Thanks in advance.

02-15-2025, 02:51 PM	#268
nephtys59 Enthusiast Posts: 33 Karma: 10 Join Date: Feb 2011 Device: Android Tablet	Hi, I have a huge calibre library of over 100.000 ebooks, all covers are there and size is lower than 300 kb. The library is synchronized with pcloud daily. Calibre sync refuses to sync missing covers (41 covers in total), either with a full update of the library, or with "download missing covers" or redownloading single cover for each book. The error is always the same: NoSuchMethodError: The getter "first" was called on null. Receiver null. I have more than enough space available on both the SD card and internal memory. How do I get Calibre Sync to download those covers? I have already tried a full maintenance of the metadata.db and deleting completely the library on Calibre Sync and redownloading it in full. Any solution from the app creator? Thanks in advance.