[Gelöst] Check whether Twig is being used

Background of the issue:
I am trying to determine whether Twig is being used on the sites versteckter Link and versteckter Link. We have many other sites built in the same way, so having this information would be beneficial.

Symptoms:
No specific issue or error message mentioned.

Questions:
Could you please check whether Twig is being used on these sites: versteckter Link and versteckter Link?