Page prevsibling nextsibling inverted

Support
2

Have you had a look at the quark blog-item.html.twig, is slightly different and always good to use quark as a reference point as it is updated / check for compatability for each release.

<p class="prev-next text-center">
{% if not page.isLast %}
        <a class="btn" href="{{ page.prevSibling.url }}"><i class="fa fa-angle-left"></i> {{ 'THEME_QUARK.BLOG.ITEM.PREV_POST'|t }}</a>
{% endif %}

{% if not page.isFirst %}
    <a class="btn" href="{{ page.nextSibling.url }}">{{ 'THEME_QUARK.BLOG.ITEM.NEXT_POST'|t }} <i class="fa fa-angle-right"></i></a>
{% endif %}

What theme are you using where the problem occurs ?

Looks like the THEME_QUARK.BLOG.ITEM.NEXT_POST and THEME_QUARK.BLOG.ITEM.PREV_POST’ might need a bit of explanation, but to this untrained eye is using a variable of where the blog directory lives

THEME_QUARK.BLOG.ITEM.PREV_POST button - Support / Themes & Styling - Grav Community Forum (getgrav.org)

I am sure pamtbaau will be able to tell you straight away, but it looks like where the location of the root of blog lives and query the next posts either side , then sends itself back to the blog (blog-item.html.twig)

as in the example site of the person who put the question in above

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from the site Spécialiste SEO (SEO Specialist) | Merci Serguey (mercisergey.com)