type invalid error when using the modal

[firaskrichi]

React.createElement: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in. Check the render method of BillSummaryContainer

I get the error on the console but the UI works well and the modal shows.

Any ideas why it's doing this?