Hi,
Welcome to Microsoft Q&A!
Currently, Microsoft Q&A supports the products listed over here: supported topics (more to be added later on). You issue related to Microsoft.Graph is not supported currently. The team is actively answering the question about WindowsCommunityToolkit here, you could report your issue here, which will help you get more help quickly.
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.