Hi!
I am getting an error when using the concat expression in this flow:

I will explain: the concat is to get the link to the created folder once the item is created with the attachments. But I am not able to find why it doesn't work correctly. The concat function is this one:
concat('https://xxx.sharepoint.com/sites/siteName/',outputs('Create_new_folder')?['body/{Path}'])
Should I change anything in that expression? Like "sitename" to the name of the site or some?