Google Dataflow Job is unable to perform transformation step

Reference: https://cloud.google.com/composer/docs/how-to/using/using-dataflow-template-operator

Code: https://github.com/kolban-google/composer-dataflow

Submitted job using following script but the Transformation step doesn’t generate any data and just shows following error.

message: “Warning: Nashorn engine is planned to be removed from a future JDK release” step: “JavascriptTextTransformer.TransformTextViaJavascript/ParDo(Anonymous)”

As a result ‘Insert to Bigquery’ step is failing.

–region us-east4
–subnetwork regions/us-east4/subnetworks/test-subnetwork
–worker-zone us-east4-b
–disable-public-ips
–gcs-location gs://dataflow-templates/latest/GCS_Text_to_BigQuery
–parameters
javascriptTextTransformFunctionName=transformCSVtoJSON,
JSONPath=gs://test-dataflow-temp-bucket/sample/jsonSchema.json,
javascriptTextTransformGcsPath=gs://test-dataflow-temp-bucket/sample/transformCSVtoJSON.js,
inputFilePattern=gs://test-dataflow-temp-bucket/sample/inputFile.txt,
outputTable=test-project:average_weather.average_weather,
bigQueryLoadingTemporaryDirectory=gs://test-dataflow-temp-bucket/sample/tmp/“`