Error: site is experiencing technical difficulties

Good day. I am having difficulty and hope that you can help me. I bought VW Pro and I am trying to use the VW Newspaper theme. When I install the theme in WordPress and then the Newspaper plugin, I can’t customize the site and it gives the following error: “The site is experiencing technical difficulties. Please check your site admin email inbox for instructions.” The email reads:

Since WordPress 5.2 there is a built-in feature that detects when a plugin or theme causes a fatal error on your site, and notifies you with this automated email.

In this case, WordPress caught an error with your theme, VW Newspaper.

First, visit your website (http://www.mywebsitetest.co.za/) and check for any visible issues. Next, visit the page where the error was caught (http://www.mywebsitetest.co.za/wp-admin/customize.php?return=%2Fwp-admin%2Fplugins.php%3Fplugin_status%3Dall%26paged%3D1%26s) and check for any visible issues.

Please contact your host for assistance with investigating this issue further.

If your site appears broken and you can’t access your dashboard normally, WordPress now has a special “recovery mode”. This lets you safely login to your dashboard and investigate further.

http://www.mywebsitetest.co.za/wp-login.php?action=enter_recovery_mode&rm_token=Jg3e0kHuBiuzEZpuioy5hX&rm_key=R5Ks8XdBin40KyqHC3zsa8

To keep your site safe, this link will expire in 1 day. Don’t worry about that, though: a new link will be emailed to you if the error occurs again after it expires.

Error Details
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An error of type E_COMPILE_ERROR was caused in line 15 of the file /home/mywebsitetestco/public_html/wp-content/themes/vw-newspaper/inc/custom-controls.php. Error message: Cannot declare class VW_Newspaper_Toggle_Switch_Custom_Control, because the name is already in use