Fonts not appliying on "release dexguard"

[NikhilBhadouria]

I am developing kotlin android app, with dexguard

calligraphy library works fine with dexguard-debug.pro

but i get following error with dexguard-release.pro and the fonts dont apply showing default fonts

: Can't create asset from fonts/Gotham/Gotham-Bold.otf. Make sure you have passed in the correct path and file name.
java.lang.RuntimeException: Font asset not found fonts/Gotham/Gotham-Bold.otf
at android.graphics.Typeface.createFromAsset(Typeface.java:310)
at uk.co.chrisjenx.calligraphy.TypefaceUtils.load(:35)
at uk.co.chrisjenx.calligraphy.CalligraphyUtils.applyFontToTextView(:114)
at uk.co.chrisjenx.calligraphy.CalligraphyUtils.applyFontToTextView(:143)
at uk.co.chrisjenx.calligraphy.CalligraphyFactory.onViewCreatedInternal(:142)
at uk.co.chrisjenx.calligraphy.CalligraphyFactory.onViewCreated(:110)