I've been reading this for hours and I can't find the error. Obviously I'm brand new at reading codes so can anyone help me? I think the error is in the following line (under logo config).

Thank you so much!

// logo config ----------------------------------------------------//

function simple_logo(){
	$src = (get_option('Simple') != '') ? get_option('Simple') : get_bloginfo('template_url') . '/img/logo.png'; 
	<a href="<?php bloginfo('url') ?>"><img src="<?php echo $src ?>" alt="<?php bloginfo('simple') ?>" id="logo" /></a>

Thank you for the post edit.

I actually figured out my mistake and the website is running smoothly again.

Sorry for creating a thread.