diff --git a/Yi.Abp.Net8/module/rbac/Yi.Framework.Rbac.Application/Services/FileService.cs b/Yi.Abp.Net8/module/rbac/Yi.Framework.Rbac.Application/Services/FileService.cs
index f7be6221..86c0891b 100644
--- a/Yi.Abp.Net8/module/rbac/Yi.Framework.Rbac.Application/Services/FileService.cs
+++ b/Yi.Abp.Net8/module/rbac/Yi.Framework.Rbac.Application/Services/FileService.cs
@@ -38,7 +38,7 @@ namespace Yi.Framework.Rbac.Application.Services
         public async Task<IActionResult> Get([FromRoute] Guid code, [FromRoute] bool? isThumbnail)
         {
             var file = await _repository.GetAsync(x => x.Id == code);
-            var path = file.GetQueryFileSavePath(isThumbnail);
+            var path = file?.GetQueryFileSavePath(isThumbnail);
             if (path is null || !File.Exists(path))
             {
                 return new NotFoundResult();