The error it shows is ERR_Name_Not_Resolved. This might be issue with Tracking server. Can you please contact Client care and check if the tracking server you are using is correct.

Hi,As per my understanding player Guidespark uses is HTML5. So using Media API will work. Below is the documentation for the same.https://docs.adobe.com/content/help/en/media-analytics/using/media-overview.html

Hi,Snapshot was not so clear. However, It seems you are using custom code and tag is not able to recognize the custom JS. Can you please share the URL so that I can look at the exact error and can help in better way.