From the file-based interface form, I clicked the Status button. From there I clicked the Display Requests button. Then I was scrolling down from the top of the list, looking at the request data, and on the fifth record down I got this error:

It's FoxPro... 😄
It crashes. It happens. This is a C5 error in the FoxPro Runtime.
Is it repeatable? Otherwise just move on.
+++ Rick ---
Well, yes. Just wanted to report it, though. I mean you'd rather have the report than not? I did not want to try to repeat it at the time, but I just tried it and it bombed with the same error on the same record. When looking at the same record via a BROWSE, there's no obvious corruption. I do note the request is from an unknown IP. I'm just testing this app now and so it's not even running much of the time. And it should always be my IP hitting it. That IP was not mine. I just deleted the record.