Index: scribus/plugins/import/pdf/slaoutput.h
===================================================================
--- scribus/plugins/import/pdf/slaoutput.h	(revision 24598)
+++ scribus/plugins/import/pdf/slaoutput.h	(revision 24599)
@@ -379,7 +379,11 @@
 	Catalog *catalog {nullptr};
 	SplashFontEngine *m_fontEngine {nullptr};
 	SplashFont *m_font {nullptr};
+#if POPPLER_ENCODED_VERSION >= POPPLER_VERSION_ENCODE(21, 4, 0)
+	std::unique_ptr<FormPageWidgets> m_formWidgets;
+#else
 	FormPageWidgets *m_formWidgets {nullptr};
+#endif
 	QHash<QString, QList<int> > m_radioMap;
 	QHash<int, PageItem*> m_radioButtons;
 	int m_actPage;