Thin Line Appearing on Interactive Online Published Files

Here is a kuve example, you can see on front page there is a thin line on far left hand side of the page? 
https://indd.adobe.com/view/b786ae40-912c-46fa-a903-f116d6e12421 its all the wway around actually, like a hairline. Im on version 19.5

@Dean36902533kfgf 

Is it visible on every zoom level?

Hello @Dean36902533kfgf,

Thank you for reaching out and sharing the details of your issue.

Could you please let me know the version of InDesign and the operating system you’re using? Also, is this thin line appearing on all your documents when published online, or just one specific file? If possible, please share a sample InDesign file with us, so we can test it further.

In the meantime, one potential solution could be to check if the line is a result of a stroke or a border on the document's master page or export settings. You might also want to verify if any interactive elements near the edges are causing this.

Looking forward to your response. 

Thank you, 
Abhishek Rao