Warning: getimagesize (/wordpress-logo.svg): failed to open stream

When I try to login to my website at caribecampo.com I get the following warning:

Warning: getimagesize(https://caribecampo.com/wp-admin/images/wordpress-logo.svg): failed to open stream: HTTP request failed! HTTP/1.1 403 Forbidden in /home/campo/public_html/campo-content/plugins/ultimate-branding/ultimate-branding-files/modules/login-image.php on line 241

The .svg image they are referring to is a WordPress logo which I don't want to be seen so I created a transparent image and replaced wordpress-logo.svg with wordpress-logo.png.

I uploaded the wordpress-logo.png file to wp-admin/images and I changed all references of .svg to .png in the /ultimate-branding/ultimate-branding-files/modules/login-image.php

but I am still getting the error.

Could you help please.
Support access is granted.