[Gelöst] In the admin panel the otgs icons are not being loaded

Background of the issue:
I am trying to configure WPML on a new site. The site I need help with is versteckter Link.

Access to font at 'versteckter Link' from origin 'versteckter Link' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.Understand this errorAI
otgs-icons.woff2:1

Failed to load resource: net::ERR_FAILED

Symptoms:
In the admin panel, the OTGS icons are not being loaded. Instead of icons, I see letters.

Questions:
How to fix this issue?