diff --git a/lib/submissions/generate_combined_attachment.rb b/lib/submissions/generate_combined_attachment.rb
index 715e7a18..faf55471 100644
--- a/lib/submissions/generate_combined_attachment.rb
+++ b/lib/submissions/generate_combined_attachment.rb
@@ -46,7 +46,7 @@ module Submissions
 
     def sign_pdf(io, pdf, sign_params)
       pdf.sign(io, **sign_params)
-    rescue HexaPDF::MalformedPDFError => e
+    rescue HexaPDF::MalformedPDFError, NoMethodError => e
       Rollbar.error(e) if defined?(Rollbar)
 
       pdf.sign(io, write_options: { incremental: false }, **sign_params)
diff --git a/lib/submissions/generate_result_attachments.rb b/lib/submissions/generate_result_attachments.rb
index e78deb2c..4e060770 100644
--- a/lib/submissions/generate_result_attachments.rb
+++ b/lib/submissions/generate_result_attachments.rb
@@ -661,7 +661,7 @@ module Submissions
 
         begin
           pdf.sign(io, write_options: { validate: false }, **sign_params)
-        rescue HexaPDF::MalformedPDFError => e
+        rescue HexaPDF::MalformedPDFError, NoMethodError => e
           Rollbar.error(e) if defined?(Rollbar)
 
           pdf.sign(io, write_options: { validate: false, incremental: false }, **sign_params)
@@ -671,7 +671,7 @@ module Submissions
       else
         begin
           pdf.write(io, incremental: true, validate: false)
-        rescue HexaPDF::MalformedPDFError => e
+        rescue HexaPDF::MalformedPDFError, NoMethodError => e
           Rollbar.error(e) if defined?(Rollbar)
 
           pdf.write(io, incremental: false, validate: false)