What is this error called "undefined" or "null"

[Prathamesh Cha1]

Hi all,

Can anyone tell me why this error is coming, here I am trying to fetch value of "value" field of record from "question_answer" table. 

[Prathamesh Cha1]

hi@Raghu Ram Y ,

I have checked on that also and created record but still not working you can chcek below link for that

https://www.servicenow.com/community/hrsd-forum/how-to-resolve-this-error-quot-read-operation-on-tab...