AddOrUpdateAsync not returning

I have the following code where I am trying to retrieve a list member, make some changes to the MergeFields, and then update their record on Mailchimp. I’ve simplified the code for readability.

var mailChimp = new MailChimpManager();
var listMember = mailChimp.Members.GetAsync(listId, email).Result;
listMember.MergeFields["MYFIELD"] = myFieldNewValue;
var transmitResult = mailChimp.Members.AddOrUpdateAsync(listId, listMember).Result;
return transmitResult;

When I call the AddOrUpdateAsync function and wait for the result, nothing ever comes back. It just sits on that line within the debugger. I’m assuming it will time-out after some point, but I’ve waited several minutes and it just sits there.

Any idea why that may be?

[brandonseydel]

Good find I altered them all…

[wc-matteo]

I think the issue is that this awaited call inside PutAsJsonAsync() has no .ConfigureAwait(false) specified. This would cause a deadlock.