Add screenshot image to pdf export

app/models/pdf_documents/base.rb

@@ -98,7 +98,7 @@ module PdfDocuments
     def safe_display(value, &block)
       return if value.blank?
 
-      yield
+      yield(value)
     end
 
     def bold(text)
@@ -106,5 +106,9 @@ module PdfDocuments
         @prawn_document.text text
       end
     end
+
+    def image(attachable, **args)
+      @prawn_document.image ActiveStorage::Blob.service.path_for(attachable.key), **args
+    end
   end
 end