Object Reference error message when trying to upload test runs in Spirateam

Hello,

Im having trouble uploading test runs in Spirateam.

Ive imported the test runs from Spirateam and when i attempt to upload them after changing the status from the dropdown it throws and error saying - 

Object reference not set to an instance of an object.

Ive cleared the sheet, imported again and made no changes and tried to upload it to see if it would upload and i keep getting the same error.

Please can someone kindly assist in this matter.

Thank you

Rav