I already have "SPListFilter 2.3 Server" solution installed inside our sharepoint server 2013 enterprise. and it is working well. i got this solution from this link http://splistfilter.vitalyzhukov.com/download/. and today i installed the newer version of the solution "SPListFilter 3.03" . but the issue i am facing is that when i tried to add the "SPListFilter 3.03" web part inside my page, i got this error:-

A Web Part or Web Form Control on this Page cannot be displayed or imported. The type could not be found or it is not registered as safe.

as follow:-

enter image description here

So can anyone advice on this error?

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