diff --git a/app/Mail/InvoiceDataMail.php b/app/Mail/InvoiceDataMail.php
index 4fc64d7..4f39c57 100644
--- a/app/Mail/InvoiceDataMail.php
+++ b/app/Mail/InvoiceDataMail.php
@@ -48,11 +48,10 @@ class InvoiceDataMail extends Mailable
         $greeting = 'Dear Sir/Madam,<br><br>We are sending here with list of "Despatch pending sale invoice & STO invoice as on date"';
 
         if ($this->scheduleType == 'Daily') {
-            $firstRecord = InvoiceDataValidation::orderBy('document_date', 'asc')->first();
-            // $lastRecord = InvoiceDataValidation::orderBy('document_date', 'desc')->first();
+            $firstRecord = InvoiceDataValidation::orderBy('document_date', 'asc')->first(); // 'desc'
 
             $startDate = null;
-            if ($firstRecord && $firstRecord->document_date != null && $firstRecord->document_date != '') {
+            if ($firstRecord && $firstRecord?->document_date != null && $firstRecord?->document_date != '') {
                 $startDate = \Carbon\Carbon::parse($firstRecord->document_date)->startOfDay();
                 // $endDate = \Carbon\Carbon::parse($lastRecord->document_date)->endOfDay();
             } else {