Render shows a white spot on object. No problems in the Vieuwport. HELP!

Hello!, i’m hoping for help, because this problem goes on for weeks.
I’m trying to make a render with texture, in the vieuwport everything seems to be okay, but on my render a white spot appears, what could be the problem?(Its a Mesh-file) And how can i solve this. Thanks in advance!


Can you provide the 3dm file and any associated texture maps?