Sorry again. Try to change code with the following 🙂

function basel_header_block_logo() {
	$logo_src = 'http://YOURWEB_SITE/LOGO_IMAGE.svg';
	$logo_img = '<img src="' . $logo_src . '" 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
}