# HG changeset patch
# User Dennis Fink <dennis.fink@c3l.lu>
# Date 2022-03-21 20:55:40
# Node ID f5ed6b0208782197fad2c77c2271db0212fe335c
# Parent  6a1782e0c6e7ba07ce592967aa752eca1cf2d341

Don't fail if the book has not isbn

diff --git a/stockcli/books.py b/stockcli/books.py
--- a/stockcli/books.py
+++ b/stockcli/books.py
@@ -28,6 +28,10 @@ def add_book_by_barcode(barcode: str) ->
         book_metadata = utils.get_request(
             f"userfields/userentity-books/{book['id']}", cached=True
         )
+
+        if book_metadata["isbn"] is None:
+            continue
+
         if isbnlib.canonical(book_metadata["isbn"]) == canonical_isbn:
 
             book_metadata = utils.get_request(