diff --git a/app/Export/CSV/DocumentExport.php b/app/Export/CSV/DocumentExport.php
index 774013c2d7..8701d0d6cf 100644
--- a/app/Export/CSV/DocumentExport.php
+++ b/app/Export/CSV/DocumentExport.php
@@ -134,6 +134,10 @@ class DocumentExport extends BaseExport
             $entity['record_type'] = class_basename($document->documentable);
         }
 
+        if (in_array('created_at', $this->input['report_keys'])) {
+            $entity['created_at'] = \Carbon\Carbon::createFromTimestamp($document->created_at)->format('Y-m-d H:i:s');
+        }
+
         // if(in_array('record_name', $this->input['report_keys']))
         //     $entity['record_name'] = $document->hashed_id;
 
diff --git a/app/Export/CSV/InvoiceExport.php b/app/Export/CSV/InvoiceExport.php
index 74671995bb..c9ffcd2b9b 100644
--- a/app/Export/CSV/InvoiceExport.php
+++ b/app/Export/CSV/InvoiceExport.php
@@ -220,7 +220,6 @@ class InvoiceExport extends BaseExport
             }
         }
 
-
         $entity = $this->decorateAdvancedFields($invoice, $entity);
 
         return  $this->convertFloats($entity);
diff --git a/app/Utils/HtmlEngine.php b/app/Utils/HtmlEngine.php
index 73c88a641e..ea09bba26b 100644
--- a/app/Utils/HtmlEngine.php
+++ b/app/Utils/HtmlEngine.php
@@ -675,10 +675,10 @@ class HtmlEngine
 
         }
 
-        $signature_invite = $this->invitation->signature_base64 ? $this->invitation : $this->entity->invitations()->whereNotNull('signature_base64')->orderBy('updated_at','desc')->first();
+        $signature_invite = $this->invitation->signature_base64 ? $this->invitation : $this->enZtity->invitations()->whereNotNull('signature_base64')->orderBy('updated_at','desc')->first();
 
         if ($this->settings->signature_on_pdf) {
-            $data['$contact.signature'] = ['value' => $signature_invite->signature_base64, 'label' => ctrans('texts.signature')];
+            $data['$contact.signature'] = ['value' => $signature_invite?->signature_base64 ?? '', 'label' => ctrans('texts.signature')];
         } else {
             $data['$contact.signature'] = ['value' => '', 'label' => ''];
         }
@@ -687,9 +687,9 @@ class HtmlEngine
             $data['$quote.reference'] = ['value' => $this->entity->quote->number ?: ' ', 'label' => ctrans('texts.quote_number')];
         }
 
-        $data['$contact.signature_raw'] = ['value' => $signature_invite->signature_base64, 'label' => ctrans('texts.signature')];
-        $data['$contact.signature_date'] = ['value' => $signature_invite->signature_date ? $this->translateDate($signature_invite->signature_date, $this->client->date_format(), $this->client->locale()) : ' ', 'label' => ctrans('texts.date')];
-        $data['$contact.signature_ip'] = ['value' => $signature_invite->signature_ip ?? '', 'label' => ctrans('texts.address')];
+        $data['$contact.signature_raw'] = ['value' => $signature_invite?->signature_base64 ?? '', 'label' => ctrans('texts.signature')];
+        $data['$contact.signature_date'] = ['value' => $signature_invite?->signature_date ? $this->translateDate($signature_invite->signature_date, $this->client->date_format(), $this->client->locale()) : ' ', 'label' => ctrans('texts.date')];
+        $data['$contact.signature_ip'] = ['value' => $signature_invite?->signature_ip ?? '', 'label' => ctrans('texts.address')];
 
         $data['$thanks'] = ['value' => '', 'label' => ctrans('texts.thanks')];
         $data['$from'] = ['value' => '', 'label' => ctrans('texts.from')];