Hello,

Please upload all the files and try again.

For 404 error, please make sure that you have uploaded the .htaccess and that your mod_rewrite is enabled and configured to use .htaccess from site directory.

You can create the .htaccess file in the folder where you uploaded the files with following contents

DirectoryIndex index.php index.html

<IfModule mod_rewrite.c>

RewriteEngine On
# RewriteBase /invoice/
RewriteCond $1 !^(index\.php|assets|install|update)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d

# For godady Shared Hosting Server uncomment the line below
# RewriteRule ^(.*)$ index.php?/$1 [L]

# Please comment this if you have uncommented the above
RewriteRule ^(.*)$ index.php/$1 [NC,L,QSA]

</IfModule>

Thank you