ROB: Guard against None-value in _get_outlines (#1060)

See #1059
py-pdf · Jul 9, 2022 · 439c749 · 439c749
1 parent 3a8199c
commit 439c749
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/PyPDF2/_reader.py b/PyPDF2/_reader.py
@@ -695,7 +695,7 @@ def _get_outlines(
                     return outlines
 
                 # TABLE 8.3 Entries in the outline dictionary
-                if "/First" in lines:
+                if lines is not None and "/First" in lines:
                     node = cast(DictionaryObject, lines["/First"])
             self._namedDests = self._get_named_destinations()