In /html/user/plugins/socialbuttons/templates/partials/_pinterest.html.twig is an additional dot what leads to error 404 when using the pinterest-button. Deleting this dot solved the problem.
Line 3, false:
<a href="http://pinterest.com/pin/create/button/?url={{ page_url }}.">
In /html/user/plugins/socialbuttons/templates/partials/_pinterest.html.twig is an additional dot what leads to error 404 when using the pinterest-button. Deleting this dot solved the problem.
Line 3, false:
<a href="http://pinterest.com/pin/create/button/?url={{ page_url }}.">correct:
<a href="http://pinterest.com/pin/create/button/?url={{ page_url }}">