hi, this isn't working as it is on nifi 1.14, can you give me a hand please? i used a "generateFlowfile" with some random text, and connected to executeScript but get the following:   ExecuteScript[id=78c5739f-017f-1000-0000-0000016ca301] ExecuteScript[id=78c5739f-017f-1000-0000-0000016ca301] failed to process due to javax.script.ScriptException: java.lang.NullPointerException: java.lang.NullPointerException in <script> at line number 25; rolling back session: java.lang.NullPointerException ↳ causes: Traceback (most recent call last): File "<script>", line 25, in <module> java.lang.NullPointerException java.lang.NullPointerException: java.lang.NullPointerException ↳ causes: javax.script.ScriptException: java.lang.NullPointerException: java.lang.NullPointerException in <script> at line number 25 ↳ causes: org.apache.nifi.processor.exception.ProcessException: javax.script.ScriptException: java.lang.NullPointerException: java.lang.NullPointerException in <script> at line number 25 ... View more

Hi, Matt! very useful and informative articles. Thank you veru much! Could you tell me how do I read content of a flowFile, transform it the way I like, and write the output to a new flowFile attribute (not back to the content)? I was trying to return transformation result from the callback but caught the error: None required for void return which is fairly expected behaviour - callback returns to the session.read function, but the latter does not return anything, I assume. So we get the flowFile itself and its content residing in different namespaces and I can't figure out how can I use content of the flowFile to place it into the attribute. Could you kindly help me, Matt? ... View more