MLSkill-Sentiment Analysis Error:Input data is missing

Hi all,
I created an MLskill -Sentiment Analysis from OOB packages. The status is in available. Now i tried to use this ml skill in the studio .
Im getting this error
.
This is what i tried.
1.Read excel activity
2.For each row in dt
2.1 MLSkill
Item -row(“feedback”).toString
JsonResponse
3.DeserializeJSON


Im not sure where the input data is missing.

Found out the error . My excel has input rows where whose feedbacks are empty. So used a try catch around ML activity.

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