EPUB: Support for subchapters without chapters.

[librarian.git] / src / librarian / elements / themes / motyw.py

diff --git a/src/librarian/elements/themes/motyw.py b/src/librarian/elements/themes/motyw.py
index 3b68c8b..f9ab197 100644 (file)
--- a/src/librarian/elements/themes/motyw.py
+++ b/src/librarian/elements/themes/motyw.py
@@ -12,7 +12,7 @@ class Motyw(WLElement):
             super(Motyw, self).html_build(builder)
 
     def get_html_attr(self, builder):
-        fid = self.attrib['id'][1:]
+        fid = self.attrib.get('id', '')[1:]
         return {
             "class": "theme-begin",
             "fid": fid,