Image does not upload on server but good on localhost

filesystems.php

    'disks' => [

        'local' => [
            'driver' => 'local',
            'root' => storage_path('app'),
        ],

        'public' => [
            'driver' => 'local',
            'root' => public_path('img'),
            'url' => env('APP_URL').'/img',
            'visibility' => 'public',
        ],

        's3' => [
            'driver' => 's3',
            'key' => env('AWS_ACCESS_KEY_ID'),
            'secret' => env('AWS_SECRET_ACCESS_KEY'),
            'region' => env('AWS_DEFAULT_REGION'),
            'bucket' => env('AWS_BUCKET'),
            'url' => env('AWS_URL'),
        ],

    ],

Controller to create category with image

public function catcreate(Request $request, Category $cat)
    {
        $validated = $this->validate($request,[            
            'name'=>'required|min:4',
            'image'=>'required|image'
        ]);

        if($request->hasFile('image')){
            $filename = time() . '.' . $request->image->getClientOriginalExtension();
            $request->image->storeAs('category', $filename, 'public');
            
            $validated['image'] = $filename;
        }

        //store
        $cat = Category::create($validated);

        return redirect()->route('catindex')->withMessage('Category created successfully!');
    }