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Error while running the webdynpro application

HI All,

I am new to web Dynpro's . I was going through this link

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/20d2def3-f0ec-2a10-6b80-877a71eccb68

to create a Pop up window using web dynpro.

After I deployed and run my application . I got the starting page which is a button and when I click the button it should open the pop up window.

But When I click the button , I am getting this error:-

Error Description:

com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Parameter windowInfo must not be null.

at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.createModalWindow(ClientComponent.java:1028)

at popapp.PopAppView.onActionCreatepopup(PopAppView.java:148)

at popapp.wdp.InternalPopAppView.wdInvokeEventHandler(InternalPopAppView.java:148)

at com.sap.tc.webdynpro.progmodel.generation.DelegatingView.invokeEventHandler(DelegatingView.java:87)

at com.sap.tc.webdynpro.progmodel.controller.Action.fire(Action.java:67)

... 27 more

Kindly suggest.

Thanks adn Regards

Neha Mahanty

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