Epub not loading on android device

Hi folks,

I am fairly new to ionic. I am trying to load an epub into one of my templates with epubjs. It is working fine in my browser when I use “ionic serve --lab”. but when running on my android device the epub fails to load to the template. I am unable to find any errors in the console log and all the needed files ie. epub.min.js, zip.min.js and inflate.js are getting loaded. Any idea on what is happening?