Why: Your code looks up '{row}' in a DataTable, but no row with that name is present in the DataTable asset.

Fix: Open the DataTable asset in Content Browser. Check the row names in the Row Editor panel. Either: (a) add the missing '{row}' row manually, or (b) update the lookup to use an existing row name, or (c) wire a Get All Row Names → ForEachLoop instead of hardcoding the name.