Icon for Research Gate is not working for Social Link in Hearder

Hi

I want to create a link to a profile from research gate and want to use the icon from font awesome as described.

<i class=”fab fa-researchgate”></i>

The icon does not work. (ich i choose others e.g. fa-apple it works jsut fine)
The link is placed in the header, there is just no icon attached to it.

Please let me know how to solve that issue.

Best
MIchael

Ticket