Fix undefined method redirect_back_or_default
Fix undefined method redirect_back_or_default

onk/fastladder,ykzts/fastladder,id774/fastladder,toshimaru/fastladder,onk/fastladder,r7kamura/fastladder,fastladder/fastladder,fastladder/fastladder,toshimaru/fastladder,ykzts/fastladder,id774/fastladder,toshimaru/fastladder,onk/fastladder,id774/fastladder,ykzts/fastladder,r7kamura/fastladder,fastladder/fastladder