[Hummingbird] Browser Caching is not working

Hello Goodday,
I have a problem regarding browser caching. here is the message.
- Your server may not have the "expires" module enabled (mod_expires for Apache, ngx_http_headers_module for NGINX).

i think the error displayed after i updated the php version so i don't think my plugin is the problem since it's not displaying on the other site with the same plugin that i use.
Can you help me resolve this one? or is there something on the server that needs to be enabled?