expires-headers? Our website has one!

I tried to test the speed of our website using [url]https://gtmetrix.com[/url] and it is telling me the following result:

“There are 67 static components without a far-future expiration date.”

And [URL=”https://gtmetrix.com/add-expires-headers.html”]this [/URL]is the recommendation.

But we have the following expires-headers:

<ifModule mod_expires.c>
ExpiresActive On
ExpiresDefault A86400
ExpiresByType image/x-icon A2592000
ExpiresByType application/x-javascript A2592000
ExpiresByType text/css A2592000
ExpiresByType image/gif A604800
ExpiresByType image/png A604800
ExpiresByType image/jpeg A604800
ExpiresByType text/plain A604800
ExpiresByType application/x-shockwave-flash A604800
ExpiresByType video/x-flv A604800
ExpiresByType application/pdf A604800
ExpiresByType text/html A900
</ifModule>

Why are we getting such result?

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