Exception raised when trying to convert an avro record to tck record

AvroRuntimeException: Not a record

case ARRAY:
            builder.withType(Type.ARRAY);
            extractedSchema = AvroHelper.getUnionSchema(AvroHelper.getUnionSchema(field.schema()).getElementType());
            Type toType = translateToRecordType((extractedSchema.getType()));
            subBuilder = recordBuilderFactory.newSchemaBuilder(toType);
            switch (toType) {
            case RECORD:
            case ARRAY:
                extractedSchema.getFields().stream().map(this::inferAvroField).forEach(subBuilder::withEntry);
                builder.withElementSchema(subBuilder.build());
                break;