500 internal server error after editing htaccess?

Question

htaccess

You need to add some lines to the htaccess file on the Wordpress site to control caching (shown below). The file has default WP settings, as soon as I add this code there (below the default code), I immediately get a 500 error. And in general, whatever I write there, any editing of htaccess immediately 500. What could be the problem?

# Optimize cache-control
<IfModule mod_expires.c>
ExpiresActive on
ExpiresDefault “access plus 1 month”
ExpiresByType image/gif “access plus 1 month”
ExpiresByType image/png “access plus 1 month”
ExpiresByType image/jpg “access plus 1 month”
ExpiresByType image/jpeg “access plus 1 month”
ExpiresByType text/html “access plus 3 days”
ExpiresByType text/xml “access plus 1 seconds”
ExpiresByType text/plain “access plus 1 seconds”
ExpiresByType application/xml “access plus 1 seconds”
ExpiresByType application/rss+xml “access plus 1 seconds”
ExpiresByType application/json “access plus 1 seconds”
ExpiresByType text/css “access plus 1 week”
ExpiresByType text/javascript “access plus 1 week”
ExpiresByType application/javascript “access plus 1 week”
ExpiresByType application/x-javascript “access plus 1 week”
ExpiresByType image/x-ico “access plus 1 year”
ExpiresByType image/x-icon “access plus 1 year”
ExpiresByType application/pdf “access plus 1 month”
<IfModule mod_headers.c>
Header unset ETag
Header unset Pragma
Header unset Last-Modified
Header append Cache-Control “public, no-transform, must-revalidate”
Header set Last-modified “Mon, 1 Oct 2018 10:10:10 GMT”
</IfModule>
</IfModule>

Answer 1

# Optimize cache-control
<IfModule mod_expires.c>
ExpiresActive on
ExpiresDefault "access plus 1 month"
ExpiresByType image/gif "access plus 1 month"
ExpiresByType image/png "access plus 1 month"
ExpiresByType image/jpg "access plus 1 month"
ExpiresByType image/jpeg "access plus 1 month"
ExpiresByType text/html "access plus 3 days"
ExpiresByType text/xml "access plus 1 seconds"
ExpiresByType text/plain "access plus 1 seconds"
ExpiresByType application/xml "access plus 1 seconds"
ExpiresByType application/rss+xml "access plus 1 seconds"
ExpiresByType application/json "access plus 1 seconds"
ExpiresByType text/css "access plus 1 week"
ExpiresByType text/javascript "access plus 1 week"
ExpiresByType application/javascript "access plus 1 week"
ExpiresByType application/x-javascript "access plus 1 week"
ExpiresByType image/x-ico "access plus 1 year"
ExpiresByType image/x-icon "access plus 1 year"
ExpiresByType application/pdf "access plus 1 month"
</IfModule>
<IfModule mod_headers.c>
Header unset ETag
Header unset Pragma
Header unset Last-Modified
Header append Cache-Control "public, no-transform, must-revalidate"
Header set Last-modified "Mon, 1 Oct 2018 10:10:10 GMT"
</IfModule>