Homepage links not working | WordPress.org

I am getting an error message whenever I click on links on the home page:

Unauthorized. You may remove the customize_messenger_channel param to preview as frontend.

Recently I have updated to new wordpress version. I have repeated the process again, but it did not work out.

Whenever I click on the links (buttons) on the homepage, there are additional characters appended to the link in the url. However, when I am using the customizer to edit the page, the links appear to be fine.

Kindly help
Thank you

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