Pinterest error

Hi there
I am getting the following error on my website when sharing on Pinterest:

Parameter ‘image_url’ (value http:) is not a valid URL format.

The URL is:

http://dailyguru.com.au/

and here is a link to a sample post where it’s happening:

http://dailyguru.com.au/manifesting-moon-energy/

Could you please let me know what the issue is here?
Thanks so much
Stefanie

https://ww.wp.xz.cn/plugins/share-me/