Fix notifications not working for some users

app/models/notification.rb

@@ -25,6 +25,8 @@ class Notification < ActiveRecord::Base
   end
 
   def send_gcm_notification
+      if !read
+        begin
           if !Rpush::Gcm::App.find_by_name("tappb")
             app = Rpush::Gcm::App.new
             app.name = "tappb"
@@ -40,6 +42,9 @@ class Notification < ActiveRecord::Base
           n.priority = 'high'
           n.content_available = true
           n.save!
+        rescue
+        end
+      end
 
 
   end