Issue with Laravel Symbolic Links

I have specific folder for each user inside storage/app/public. I'm dynamically changing the public_path as:

$storageConfig = Config::get('filesystems.disks.public');
$storageConfig['root'] = storage_path('app/public/').$userString ;
config()->set('filesystems.disks.public', $storageConfig);

When a user uploads his photo, it will get saved in the path

storage/app/public/$userString/profile_pictures

I used the php artisan command to create the link:

php artisan storage: link

But I have this issue while displaying images. Using symbolic link, images are displayed as:

  <img src="">

Images are not loading . What can be the issue? Can someone help?

via Chebli Mohamed