There is no C# code mentioned here. This sounds like an error in Office or a similar app. Based upon your error code and the debug help stuff this looks like a macro running in an Office app.
Please provide us the steps to follow to replicate your problem including the app(s) you're using. It sounds like you're trying to use a pivot table/chart but the data you're providing isn't in a format that it requires. It requires at least 2 rows.