za.co.absa.cobrix.cobol.parser.ast.Primitive cannot be cast to za.co.absa.cobrix.cobol.parser.ast.Group

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## Question
I am getting below Error while parsing copy book with binary mainframe datafile. I am attaching copybook for the same.

Py4JJavaError: An error occurred while calling o200.load.
: java.lang.ClassCastException: za.co.absa.cobrix.cobol.parser.ast.Primitive cannot be cast to za.co.absa.cobrix.cobol.parser.ast.Group
at za.co.absa.cobrix.cobol.parser.Copybook$$anonfun$3.apply(Copybook.scala:229)
at za.co.absa.cobrix.cobol.parser.Copybook$$anonfun$3.apply(Copybook.scala:225)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:48)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
at scala.collection.AbstractTraversable.map(Traversable.scala:104)
at za.co.absa.cobrix.cobol.parser.Copybook.generateRecordLayoutPositions(Copybook.scala:225)
at za.co.absa.cobrix.spark.cobol.schema.CobolSchema.sparkSchema$lzycompute(CobolSchema.scala:55)
at za.co.absa.cobrix.spark.cobol.schema.CobolSchema.sparkSchema(CobolSchema.scala:54)
at za.co.absa.cobrix.spark.cobol.schema.CobolSchema.getSparkSchema(CobolSchema.scala:94)
at za.co.absa.cobrix.spark.cobol.reader.fixedlen.FixedLenNestedReader.getSparkSchema(FixedLenNestedReader.scala:53)
at za.co.absa.cobrix.spark.cobol.source.CobolRelation.schema(CobolRelation.scala:79)
at org.apache.spark.sql.execution.datasources.LogicalRelation$.apply(LogicalRelation.scala:77)
at org.apache.spark.sql.SparkSession.baseRelationToDataFrame(SparkSession.scala:424)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:172)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:156)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
at py4j.Gateway.invoke(Gateway.java:282)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.GatewayConnection.run(GatewayConnection.java:238)
at java.lang.Thread.run(Thread.java:748)
[IOGCRFCB.TXT](https://github.com/AbsaOSS/cobrix/files/6753526/IOGCRFCB.TXT)