Missing headers

[sajjad220]

@serpent_driver
I contacted the hosting support. They told me to ask what configuration is wrong or should be changed? Or which parameter or addressing is incorrectly located in the config that caused this error?
Please advise

 

[serpent_driver]

Just ceck the value for cache-control. Main document may never be public und always must me be "0" if max-age is set.

 

[sajjad220]

@serpent_driver
Dear, this problem related to the server configuration or plugin configuration?
Hosting provider didn't accept this and now i have that problem....

Where they should check? My server is on cpanel.

 

[serpent_driver]

I have already told you that your provider isn't responsible for this incorrect configuration, because in 10 out of 10 cases the cause is only a few centimeters or inches in front of the monitor. That means you installed some questionable plugin that was doing this crap. Therefore I can only advise to check your plugins and to temporarily deactivate all plugins if necessary. Then purge the LScache and then check the response header.