Redirected your main site to other site when click widgets button

Hi,
I made a big mistake.

I want to test the cloak hoplink. The hoplink is in php code:
<?php
header(“Location: https://AFFILIATE.PUBLISHER.hop.clickbank.net&#8221;);
?>

I put this hoplink in the widgets sidebar and press save.
Then my original site redirected to other site (mistake). I need to fix it.

Now the problem is if I click on the Widgets button at the wp control panel, it will redirect to other site, it will not go to the Widgets page. So now I can’t removed the code that in the widgets sidebar that I made mistake before.

Actually the widgets sidebar was disappear when I click the “Saves Setting button”.

I can put the php code in the widgets sidebar because I used the plugin called “php code widget”.

Thank you for your help.

Note: You can try go to the site. https://www.3eworld.org