text: Hello it-fred!
  The restriction 
  https://www.openstreetmap.org/relation/9181836
  is missing its via-member.
  
  Meaning: you have a way where you come from ("from"-member) and a way where you drive to ("to"-member). The node that connects both ways ("via"-member) js missing in the restriction. 
  
  In this no_u_turn case it must either be node 2265755326 or node 1573710272.
  I can't tell it from afar, this must be checked locally.
  
  I hope this helped you!