Error while building signed apk bundle, no error in debug bundle

I have recently encountered a weird issue while building signed apk or bundle, So the error I face is shown below. It's weird that this issue does not rise while building debug apk or bundle. Please help ! Type com.pollfish.a.a is defined multiple times: C:\Users\dayus\Desktop\gamony_mobile-master\pollfish-googleplay-5.6.0\build.transforms\0c22a5f667a862489d3a95f287709e6b\transformed\jetified-pollfish-googleplay-5.6.0-runtime\classes.dex, C:\Users\dayus\Desktop\gamony_mobile-master\app\build\intermediates\external_libs_dex\release\mergeExtDexRelease\classes4.dex