fixed issue with disk test, now with correct fix for redirection after creation

Modules/Helpdesk/Services/SlaService.php

@@ -6,6 +6,7 @@ namespace Modules\Helpdesk\Services;
 
 use App\Models\User;
 use Illuminate\Support\Carbon;
+use Illuminate\Support\Facades\Schema;
 use Modules\Helpdesk\Models\Comment;
 use Modules\Helpdesk\Models\SlaPolicy;
 use Modules\Helpdesk\Models\Ticket;
@@ -72,14 +73,19 @@ final class SlaService
             return;
         }
 
-        /** @var Comment|null $firstPublicComment */
-        $firstPublicComment = Comment::query()
+        /** @var \Illuminate\Database\Eloquent\Builder<Comment> $query */
+        $query = Comment::query()
             ->where('ticket_id', $ticket->id)
             ->where('is_internal', false)
-            ->whereNull('tombstoned_at')
             ->with('user')
-            ->oldest('created_at')
-            ->first();
+            ->oldest('created_at');
+
+        if (Schema::hasColumn('helpdesk_comments', 'tombstoned_at')) {
+            $query->whereNull('tombstoned_at');
+        }
+
+        /** @var Comment|null $firstPublicComment */
+        $firstPublicComment = $query->first();
 
         if ($firstPublicComment === null) {
             return;