Hi Expert,
Today I published an App for SharePoint and Register the App and Permission, after that I installed it and Add it, Trust it. Than a error comes up as the following images. I uploaded the Error Message and my source code for you to look at. I would like to know whether or not when we get the SharePoint Online Content, we really need to use the Token.? Because at the moment, I got the sharepoint content is not to use it. ... OMG. how should I handle it.?
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