fix join project api route

config/routes.rb

@@ -715,7 +715,7 @@ Rails.application.routes.draw do
     resources :libraries, only: [:index, :show, :create, :update, :destroy]
 
     scope module: :projects do
-      resources :applied_projects, only: [:create]
+      resources :project_applies, only: [:create]
     end
   end