All Centos Web Panel Websites homepage downloads a blank page.

All Centos Web Panel Websites homepage downloads a blank file named “download”. This problem started to happen randomly.

I am wondering what causes this problem exactly and how to fix it permanently with Centos Web Panel?

There is nothing wrong with the files in my web app because this problem happen across sites with different website domains with different type of web applications.

The only fix I can find is, rebuilding the webserver in admin cwp, and then all my websites are working again. But it the problem go back after a few hours.

I am currently using nginx -> apache -> php-fpm as a webserver, and I rebuild this webserver to resolves this problem. But the problem keeps going back.

I've been using Centos Web Panel for almost over a year now, and this problem just started to happen randomly. Please help.

you should check logs or check with cwp support
https://control-webpanel.com/contact