@EH2077 Its hard to troubleshoot as this is your custom code, and we do not extensively debug code over the developer forum.
From some of the past forum post, your issue might be caused by a race condition. In other words, there is a possibility that the web application is referencing to our SDK object before it has completely loaded from the web.
Here’s one of the thread which you might find useful
do tag me in your response to get my attention to reply