Hi, I am working with the world's 2nd largest digital marketing agency since last 2 years. During these 2 years I have worked on many big accounts spread over multipe domains and countries. To name a few of my clients I'll give you some clues (not supposed to name the client). I have worked with Indias best online sports website since last 2 years and lead the project during World Cup and IPL. I also work on an account which is the world's largest phone company. I am proficient in setting up analytics as well as reporting. I have worked on Google analytics, Google Tag Manager, Tealium, Adobe Analytics and Dynamic Tag Manager by Adobe. I am Adobe Certified Expert - Analytics Architect I have also certified by Google through the GAIQ test.
About the error - I will have to debug the code and test the tracking on the website. I can check if you provide the URL
Hope to work with you soon.