403 Forbidden Error on Media Upload

Hi

I’m having some trouble accesing the media page on my wordpress admin. When I click on “media”, I get a 403 forbidden error page. Following the suggestions on that page, I think that the error comes from the .htaccess file. If I delete it, it works just fine.

But I would like to know which part of it is causing the problem. Recently, the file was modified by my hosting (siteground) because they told me I was vulnerable to attacks from bots.

Here’s my .htaccess file (I think the “deny from” section is causing the problem):

## EXPIRES CACHING ##
<IfModule mod_expires.c>
ExpiresActive On
ExpiresByType image/jpg "access plus 1 year"
ExpiresByType image/jpeg "access plus 1 year"
ExpiresByType image/gif "access plus 1 year"
ExpiresByType image/png "access plus 1 year"
ExpiresByType text/css "access plus 1 month"
ExpiresByType application/pdf "access plus 1 month"
ExpiresByType text/x-javascript "access plus 1 month"
ExpiresByType text/javascript "access plus 1 month"
ExpiresByType application/x-shockwave-flash "access plus 1 month"
ExpiresByType application/javascript "access plus 1 month"
ExpiresByType application/x-javascript "access plus 1 month"
ExpiresByType image/x-icon "access plus 1 year"
ExpiresDefault "access plus 2 days"
</IfModule>
## EXPIRES CACHING ##

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

AddOutputFilterByType DEFLATE text/plain
AddOutputFilterByType DEFLATE text/html
AddOutputFilterByType DEFLATE text/xml
AddOutputFilterByType DEFLATE text/css
AddOutputFilterByType DEFLATE application/xml
AddOutputFilterByType DEFLATE application/xhtml+xml
AddOutputFilterByType DEFLATE application/rss+xml
AddOutputFilterByType DEFLATE application/javascript
AddOutputFilterByType DEFLATE application/x-javascript

<filesMatch ".(ico|pdf|flv|jpg|svg|jpeg|png|gif|js|css|swf)$">
Header set Cache-Control "max-age=84600, public"
</filesMatch>

# BLOCK BLANK USER AGENTS
RewriteCond %{HTTP_USER_AGENT} ^-?$
RewriteRule ^ - [F]

##Deny access to all CGI, Perl, Python and text files
<FilesMatch ".(cgi|pl|py|txt)">
Deny from all
</FilesMatch>
##If you are using a robots.txt file, please remove the
# sign from the following 3 lines to allow access only to the robots.txt file:
<FilesMatch robots.txt>
Allow from all
</FilesMatch>
AddHandler application/x-httpd-php56 .php .php5 .php4 .php3

Thank you in advance.