Copy files from a SharePoint List element (attachments) to a document library folder

[Unbihexium]

Hello all

I've troubles to copying files to a specific folder. Maybe I do something wrong but I cannot figure out what it is.

As you can see in the Pic1 there is a Folder and a file creating step (SharePoint Doc-Library) which works perfectly (see Pic2)-->
I get the folder and file as expected.

In the next step I just want to copy files from a SharePoint list element (attachments) to the just before created folder..

but however I set it up it fails with the following error "403 FORBIDDEN" (Pic3) 

It looks like I dont have the right permissions BUT that can not be because I am the admin/owner on all platforms (Sharepoint, MS Flow, PowerApps and so on)
I've tried with a different "file copy" step (the new file copy) and get the following error: "Source or Destination likely invalid."
But when I check the details of the error I dont see any problem causing this error. (Var2 and Var2_error)

Have someone any idea what I'm doing wrong or what is missing to achieve this?

for any Help thanks in advance

regards

Pic1

[Unbihexium]

Pic1Pic2Pic3Pic3 part2Var2Var2_error