Incorrect output after cutting

[Funda5C86]

Hello, I have cutted out a girl and changed teh background - now there ist a small line like a frame. Please see picture. How can I delete  or make the line invisble? Many thanks in advance  

[JJMack]

There seems to be layers above the AdobeStock_...29686 Kopie.  Perhaps you added the line in one of those layers