Single Product template header

Hello everyone!
I am fairly new to wordpress and everything else related to website development in general and would be really happy if you could help me with the following problem:
When I try to build my single product template I see an error message in the header saying:

Notice
: Trying to get property 'post_type' of non-object in
/home/lunaxhu1/public_html/wp-includes/class-wp-query.php
on line
4179

Notice
: Trying to get property 'post_type' of non-object in
/home/lunaxhu1/public_html/wp-includes/class-wp-query.php
on line
4179

I tried to find solutions and saw pretty similar posts but could not figure out how to apply them to my case.
I use wordpress 5.6.2., woocommerce 5.0.0., elementor 3.1.3 and elementor pro 3.1.1
Any help is much appreciated!