Error message when I use SharePoint activity

Help
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1

Hi,

I get this error message each time I want to use a SharePoint activity, I get the same message for all of them. What does it mean?

Thanks Capture

2

Its confusing me everytime with the URL we are providing for this activity. I have done this many times, but each and every time , I’m missing something in the URL. Can you please check with the URL you are using

3

I guess you need just the relative url from the root of your Site.