The problem is as follows, after migrating from wordpress from one hosting to the other a problem occurs, it does not display anything just download a file called "download", I had this same error once but it was solved by own hosting.
.htaccess
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>