Installed Modules Page Inaccessible when internet is off

[ajaxthemestudios]

Hello

I have Prestashop 1.7.2 installed on Xampp. I went off the internet and suddenly after got a 500 error message when trying to work on the installed module page. After enabling debug, the errors below came up. Strangely, when I connect the internet again, the page loads successfully but the problem returns the moment I  go offline again.

1/2 ConnectException in CurlFactory.php line 126:

cURL error 28: Resolving timed out after 5672 milliseconds

2/2 ConnectException in RequestException.php line 49:
cURL error 28: Resolving timed out after 5672 milliseconds

Please find attached the full screenshot.

What could have caused this problem? Should internet connection be even needed for a page listing existing modules?

 

Thanks