SSL Certificate gets failed due to images

[eternalodball]

I tried to get a ssl certificate using certbot and it succeded but In firefox , the ssl certificate get cancelled out and it says that "Parts of this page are not secure ( such as images )"

Well https works fine in chrome but it cancells in brave and firefox due to some files may be ..........

Can you edit the code to fix it , pls !!!

website :- https://follow.soon.it/ig/ [error in firefox and brave ]