If you want to run Fusio on a shared-hosting environment it is possible but in general not recommended since you can not properly configure the web server and access the CLI. Therefore you can not use the deploy command which simplifies development. The biggest problem of a shared hosting environment is that you can not set the document root to the public/ folder. If you place the following .htaccess file in the directory you can bypass this problem by redirecting all requests to the public/ folder.

RewriteEngine On
RewriteBase /fusio/

RewriteCond %{THE_REQUEST} /public/([^\s?]*) [NC]
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ public/index.php/$1 [L,QSA]

While this may work many shared hosting provider have strict limitations of specific PHP functions which are maybe used by Fusio and which produce other errors.