At the moment you can fix it by adding the following code to the functions.php file in the child theme
function basel_header_block_logo() {
$header_color_scheme = basel_get_opt( 'header_color_scheme' );
// Get the logo
$logo = BASEL_IMAGES . '/logo.png';
$logo_white = BASEL_IMAGES . '/logo-white.png';
$logo_uploaded = basel_get_opt('logo');
$logo_white_uploaded = basel_get_opt('logo-white');
if(isset($logo_white_uploaded['url']) && $logo_white_uploaded['url'] != '') {
$logo_white = $logo_white_uploaded['url'];
}
if(isset($logo_uploaded['url']) && $logo_uploaded['url'] != '') {
$logo = $logo_uploaded['url'];
}
if( $header_color_scheme == 'light' ) {
$logo = $logo_white;
}
$protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
$logo = $protocol. str_replace(array('http://', 'https://'), '', $logo);
$logo_img = '<img src="' . $logo . '" alt="' . get_bloginfo( 'name' ) . '" />'
?>
<div class="site-logo">
<a href="<?php echo esc_url( home_url('/') ); ?>" rel="home">
<?php echo ( $logo_img ); ?>
</a>
</div>
<?php
}
If you are not using child theme just find the file inc/functions.php
and replace this function with a new one. We will fix this in the next update for sure.