There is an error with the WordPress plugin zlib.output_compression: it is not on

After installing Wordpress Matomo plugin yesterday, I haven’t received a report. According to the diagnostics tab, I have the following error:
The zlib.output_compression function is off in the WordPress plugin
What can I do to fix it?
Thanks a lot

Here is URL.

Hi @philips_william

This displayed value come from the method ini_get.
Your php configuration might be good, but you may have a plugin which update your zlib compression

Can you please look into this further.