Hi @steelmaiden
no, that’s not the problem. These are internal definitions
<script type="application/ld+json">{"@context":"http://schema.org","@type":"WebSite","url":"https://wmforum.geek.hr","potentialAction":{"@type":"SearchAction","target":"https://wmforum.geek.hr/search?q={search_term_string}","query-input":"required name=search_term_string"}}</script>
like namespace definitions, not urls used to load the content.
I don’t see mixed content warnings.
Use Ctrl + Shift + I, then check the console to find the urls.