Unexpected error when adding Row to Dataset Manually

Hi,

I am trying to manually add a row to a dataset for testing purposes - in the future, I want to do something like this - and, when I press ‘Next’ or ‘Save,’ I receive the following error message: “Unexpected Error: Please contact support.” How can I fix this error?

Which CMS version are you using please?

Could you also go through Report Fault Wizard to get more details log about this error?