New entry with isbn http status code 404

I got this exception when searching for a isbn:

JabRef 5.12–2023-12-24–4233bad
and also at
JabRef 5.13–2024-04-01–6bdcf63
Windows 11 10.0 amd64
Java 21.0.2
JavaFX 22+30

Exception during fetching when using fetcher 'ISBN' with entry id '9783770403493'.
org.jabref.logic.importer.FetcherClientException: Encountered HTTP Status code 404
	at org.jabref@5.12.60000/ Source)
	at org.jabref@5.12.60000/ Source)
	at org.jabref@5.12.60000/org.jabref.logic.importer.IdBasedParserFetcher.performSearchById(Unknown Source)
	at org.jabref@5.12.60000/org.jabref.logic.importer.fetcher.isbntobibtex.IsbnFetcher.performSearchById(Unknown Source)
	at org.jabref@5.12.60000/org.jabref.gui.EntryTypeViewModel$ Source)
	at org.jabref@5.12.60000/org.jabref.gui.EntryTypeViewModel$ Source)
	at org.jabref.merged.module@5.12.60000/javafx.concurrent.Task$ Source)
	at java.base/ Source)
	at java.base/java.util.concurrent.Executors$ Source)
	at java.base/ Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$ Source)
	at java.base/ Source)


this error message means that JabRef cannot find an entry for the given ISBN. JabRef tries two websites to find information about ISBN (GVK and open library) and it seems like they don’t have any data for this ISBN. In this case you can try e.g. Online ISBN to BibTeX converter - and paste the bibtex on the main table.

In the latest development version, we have improved the error messages already to be more user-friendly.


  author    = {Goscinny, Ren{\'e} and Uderzo, Albert and Conrad, Didier and Ferri, Jean-Yves and {Fabcaro}},
  date      = {2024-04-08},
  title     = {Asterix Gesamtausgabe, Bd.15, Die Tochter des Vercingetorix, Der goldene Hinkelstein, Asterix und der Greif, Die wei{\ss}e Iris},
  isbn      = {9783770403493},
  language  = {de},
  pagetotal = {224},
  publisher = {Egmont Comic Collection},
  url       = {},
  year      = {2024},