Error in PIG script

Hi,

I am getting the below error when trying to execute the pig scipt.The

A = LOAD '/user/xxxxxxxxxxxxxxxxxxxx/FILES/sample.csv' using PigStorage()
AS (exch:chararray);
DUMP A;

{ "message": "Error submitting workflow pig-app-hue-script - xxxxxxxxxxxxxxxxxxxx", "traceback": [ [ "/usr/local/hue/apps/oozie/src/oozie/views/editor.py", 368, "_submit_workflow", "job_id = submission.run()" ], [ "/usr/local/hue/desktop/libs/liboozie/src/liboozie/submittion.py", 85, "run", "self.oozie_id =...

Error in PIG script