No path to transform

[demi_straathof]

Hi guys, 
I could really appreciate your help with a problem that I lately have with my GIMP program (version 2.10.18). 
If I want to scale a part of the picture with shift + t (Windows). I get this notification that there's no path to transform, but I really have no idea what that means.
I have selected a layer and selected the picture in it. So can somebody explain to me what I'm doing wrong? 


I have attached a screenshot of the notification, but it's in Dutch. 
The literal translation: There is no path to transform.

[Ofnuts]

That means that your transform tool is set to act on paths. See the "Transform" line at the top of the Tool options, there are four icons, from left to right, that set what is transformed:

• Layer: the active layer (the options you want)
  
• Selection: the selection mask (and not the selected pixels)
  
• Path: the current path (the one you likely have set by mistake)
  
• Image (since 2.10.14): transforms the whole image (and not just the active layer)
  

See https://docs.gimp.org/en/gimp-tools-tran...-transform