"WicketRuntimeException" logged in console when any button or option selected in document Picker in wicket development mode.

Steps to reproduce:-->
1.Run go green project in wicket development mode.
2.Open any news document in edit mode.
3.Go to CK editor & create an Internal link.
4.Document picker dialogue opens.
5.Now click on either "cancel" button or select "Assets" from drop down.
6. Stack trace gets logged in console.
Please check the attached full logs
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[INFO] [talledLocalContainer] Caused by: org.apache.wicket.WicketRuntimeException: Stopped plugin is still being referenced: org.hippoecm.frontend.plu
gins.cms.browse.list.FolderViewPlugin