get_store_content_by_url returns "There is no store here..."

Hello good people in the MarketKing land!

I got an unexpected returns from the above function. User ID 6 is a vendor. When i execute 

echo marketking()->get_store_link(6);

 i get store link, eg, "https://hellostore/store/toystore". But when i execute

echo marketking()->get_store_content_by_url(marketking()->get_store_link(6));

i get "There is no store here..."

I wonder what went wrong. :

thankyou sir. very helpful

marcie.