java.io.IOException: Expected 12 fields, but got 5 for row :Spark submit error

Hello

I'm trying to run a spark application (distributedWekaSpark) but  when I'm using the spark-submit command I get this error

ERROR Executor: Exception in task 0.0 in stage 0.0 (TID 0) java.io.IOException: Expected 12 fields, but got 5 for row: outlook,temperature,humidity,windy,play

I tried with other datasets but always the same error appeared, (always 12 fields expected)