Uncaught ReferenceError: $st is not defined at common.js:263

Hi,

I'm getting this error with my PBI custom visual which is coming from common.js file. I've searched around but have found nothing on this error.. 

I'm using Chrome Version 67.0.3396.99 (Official Build) (64-bit) and pbiviz v1.13.0.

Any ideas what could be causing it? Help please?