So, I have a code that create folder, csv, images inside storage folder in my Laravel project. It doesn’t work when I deploy it to 000webhost.
File::makeDirectory($path); //create directory
fputcsv($file, $headers, ";", '"'); //create csv
Storage::disk('local')->put('charts/'.$nama_survei.'/'.$image[0].'/'.$imageName, base64_decode($image[1])); //make png imagesLaravel isn’t officially supported on the free platform due to certain features that Laravel requires being disabled on the free plan, putenv, getenv, setenv etc.
https://laravel.io/forum/04-16-2015-disabled-function-putenv
You can upgrade to premium where the features are enabled and working or you can mess around with it in the hopes it works.
There is a tutorial that might help
Teodor might be of more assistance 
When you login if you hover and see Details
That’ll give you a home path if needed.