https not secure message with mixed content

-- url of the page with the problem -- : www.billbo.co.uk/index.php/bears/sitting...rs/25cm-charlie-bear
-- HikaShop version -- : 3.2.2
-- Joomla version -- : 3.8.3
-- PHP version -- : 5.6.22
-- Browser(s) name and version -- : Chrome
-- Error-message(debug-mod must be tuned on) -- : mixed content not secure

Hi,

I have just setup my website with a ssl certificate and set joomla to use the https protocal.
All works fine but when I go to certain products I get the warning that there is mixed content.
How can I get these products to use the https like the other products on my site.
I have attached a pic of the error.

Regads
Paul Kemp

Thanks Nicolas,

Dont know why I didnt spot that myself, long day I guess.

Thanks Paul