Why I am showing this ?

The advanced-cache.php file is used by various optimisation plugins. It is created in the must-use directory (mu-plugin) and contains information that cannot be deactivated and is always loaded.

I see that you are using WP Rocket. This commercial optimisation plugin also creates this file. If you have any questions about why this is happening, please contact their support. However, you will only get rid of the file if you also do without WP Rocket.

After uninstalling the wp rocket plugin also it is remaining the problem!

then I have edited my wp config.php in my cpanel. Here I have edited code and made it

define( ‘WP_CACHE’, true );

But yet the problem is remaining.

Thanks.

Also I am facing a new problem from yesterday that, in my blog post images are showing in more bigger that I set!

Please visit this url to check it out live.

https://bn.iteachhealth.com/achalasia-cardia-causes-types-symptoms-treatment/

Here you see that the pictures are more bigger than the actual size and it have crossed the posting area. Please tell me what is the problem?

Thanks.

As I said, this is not a problem in that sense. The file is used by a plugin you are using.

You could also take a look at the contents of the file via FTP. This should tell you which plugin is using it.

The image problem may have been caused by uninstalling WP Rocket. WP Rocket helps to optimise exactly that.

Oh! Thank you my brother. After trying several times I have dolved this proble. It was from Hide My WP Ghost plugins setting property.

Thanks you again.