Update qbo_controller.rb

app/controllers/qbo_controller.rb

@@ -34,7 +34,7 @@ class QboController < ApplicationController
   # Called when the user requests that Redmine to connect to QBO
   #
   def authenticate
-    redirect_uri = quickbooks_oauth_callback_url
+    redirect_uri = qbo_oauth_callback_url
     grant_url = oauth2_client.auth_code.authorize_url(redirect_uri: redirect_uri, response_type: "code", state: SecureRandom.hex(12), scope: "com.intuit.quickbooks.accounting")
     redirect_to grant_url
   end