Started getting this ambiguous sql error

So it is being caused by the shortcode I thought it was, but not when displayed directly on the page. It’s being caused by a custom function I wrote that creates an excerpt from the content of the page when “get_the_excerpt()” returns nothing in a list of recent posts. My function is as follows–

function custom_excerpt_length($length){
	$excerpt = do_shortcode( get_the_content() );
	$excerpt = strip_tags($excerpt, '<br><li><p>');
	$excerpt = str_ireplace(array('<br>'), array(', '), $excerpt);
	$excerpt = str_ireplace(array('<li>','</li>'), array(', ', ''), $excerpt);
	$excerpt = str_ireplace(array('<p>','</p>'), array(', ', ''), $excerpt);
	while (substr($excerpt, 0, 1) == ',') { $excerpt = substr($excerpt, 1); }
	$excerpt = trim($excerpt);
	if (strlen($excerpt) > $length) {
		$permalink = get_permalink();
		$excerpt = substr($excerpt, 0, $length);
		$excerpt = substr($excerpt, 0, strripos($excerpt, " "));
		$excerpt = trim(preg_replace( '/\s+/', ' ', $excerpt));
		$excerpt = $excerpt.'... <a href="'.$permalink.'">more</a>';
	}
	return $excerpt;
}

The “$excerpt = do_shortcode( get_the_content() );” is causing it. This is being ran in the loop on a homepage set to show the most recent posts. The shortcode is–

[mla_gallery mla_link_attributes=’rel=”none”‘ attachment_category=board-governance mla_style=mla-policy-list-ul mla_markup=mla-policy-list-ul post_parent=all orderby=title order=asc post_mime_type=all link=file]

wow, ok. I tracked it back even further to another custom function that I wrote where I was hooking “pre_get_posts” to add pages to the loop, but only if they were 1 month old or newer. I just had to modify that query to include the table name ($wpdb->prefix.’posts’). I guess you are also hooking that somewhere? Either way, ignore my ramblings I suppose 🙂