Error: Trying to get property of non-object

Hello,

I’ve just had an issue pop up on my website, covering the entirety of all of my pages with the following error:

Notice: Trying to get property of non-object in /home/a****a/public_html/wp-includes/taxonomy.php on line 1946

I’ve copied line 1946 from the taxonomy.php file, and pasted it below:

if ( $child->count ) {

I’m assuming this particular file has to do with Woocommerce, which I delete and reinstalled in attempt to fix the issue… with no luck.

Anything I can do to fix this?

Thanks in advance!