ubuntu – Why website keeps on asking logins whenever I visit the site or refresh the site pages?

I have just deployed my website files in

“var/www/hatml/site-files”

runinig no ubuntu server (zend-server) via Amazon Web Service(AWS) ec2 instance
but whenever I attempt to load or type the domain address of the website in any browser, a pop up window shows
and say something like

“The server http://websitename.com:10081 requires authentication….”,

and below it there is the username and password field to enter the credentials.

If I click on cancel, it displays the website, in any browser I use.
and at the bottom below the footer; it displays “zend sever” as shown below
enter image description here
I’ve scanned the pc with Malwarebytes and total security a few times.
And also, verifying every file in root folder.