我试图得到每个州的平均raisedamt，但是我得到了这个错误

Invalid field projection. Projected field [raisedAmt] does not exist in schema: group:chararray,funding:bag{:tuple(permalink:chararray,company:chararray,numEmps:chararray,category:chararray,City:chararray,State:chararray,fundedData:chararray,raisedAmt:long,raisedCurrency:chararray,round:chararray)}

我不明白，因为我可以看到raisedamt在模式中。请帮我理解这个问题