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NullPointerException in wdModifyView?

hi @,

I have created a view where I am putting some input and the entry on click of button gets displayed in the table below.

But When I am starting the application i am getting nullpointer exception in wdmodifyview.

I have checked the cardinality of the input form is 1..1 and table its 0..n

Dont know why wdModify is getting called at the start of application ?

Regards

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