Done

app/Http/Controllers/HouseController.php

@@ -25,6 +25,7 @@ public function update(Request $request, House $house)
         $filename = $request->file('photo')->store('houses');
 
         // TASK: Delete the old file from the storage
+        Storage::delete($house->photo);
 
         $house->update([
             'name' => $request->name,
@@ -38,5 +39,6 @@ public function download(House $house)
     {
         // TASK: Return the $house->photo file from "storage/app/houses" folder
         // for download in browser
+        return Storage::download($house->photo);
     }
 }

app/Http/Controllers/OfficeController.php

@@ -13,10 +13,11 @@ public function store(Request $request)
 
         // TASK: Upload the file "photo" so it would be written as
         //   storage/app/public/offices/[original_filename]
+
 
         Office::create([
             'name' => $request->name,
-            'photo' => $filename,
+            'photo'=>$request->file('photo')->storeAs('offices',$filename,'public')
         ]);
 
         return 'Success';

app/Http/Controllers/ProjectController.php

@@ -4,18 +4,20 @@
 
 use App\Models\Project;
 use Illuminate\Http\Request;
+use Illuminate\Validation\Rules\File;
 
 class ProjectController extends Controller
 {
     public function store(Request $request)
     {
         $request->validate([
             // TASK: Write the validation rule so "logo" file would be MAX 1 megabyte
+                           'logo'=>File::image()->max(1024)
         ]);
 
         // TASK: change the below line so that $filename would contain only filename
         // The same filename as the original uploaded file
-        $filename = '???';
+        $filename = $request->file('logo')->getClientOriginalName();
         $request->file('logo')->storeAs('logos', $filename);
 
         Project::create([