FIX: Don't log validation errors for sso

app/controllers/session_controller.rb

@@ -112,6 +112,8 @@ class SessionController < ApplicationController
       else
         render text: I18n.t("sso.not_found"), status: 500
       end
+    rescue ActiveRecord::RecordInvalid => e
+      render text: I18n.t("sso.unknown_error"), status: 500
     rescue => e
       details = {}
       SingleSignOn::ACCESSORS.each do |a|