Ultimate Branding Log In Image

I am getting the below error when I set a custom image. I tried to upload a svg image to replace the wordpress.svg logo image but I got an error which stated that was denied for security reasons. So I uploaded my own logo.svg image and I get the below error on the page in the configuration window . The error also displays on the login page. The error is:

Warning: getimagesize() [function.getimagesize]: http:// wrapper is disabled in the server configuration by allow_url_fopen=0 in /home/myusername/public_html/mydomain.com/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/login-image.php on line 250

Warning: getimagesize(http://mydomain.com/wp-admin/images/mylogo.svg) [function.getimagesize]: failed to open stream: no suitable wrapper could be found in /home/myusername/public_html/mydomain.com/wp-content/plugins/ultimate-branding/ultimate-branding-files/modules/login-image.php on line 250