Laravel envoy deployment, correct storage symlink?

I create tasks to deploy my app with envoy, one from this tasks is to create symlink for storage:

@task('app_storage_link')
    cd //storage;
    rm -r app
    ln -s /data/app app;
    chgrp -h www-data app;
@endtask

Now, I'm trying to run this: Storage::disk('local')->put('test.txt', 'Some txt content'); but I get there error: Impossible to create the root directory "".

As second example I tried to run a command, the import data is in /var/www/project/data/app/public/import.xml but there is also a error comming simplexml_load_file(): I/O warning : failed to load external entity "/var/www/project/releases/release_20180303153006/storage/app/public/list.xml"

Is my symlink really correct? Maybe there is some other way to create symlinks for folders?

via Chebli Mohamed