Xamarin deployment failing with zipalign.exe error

I am using Visual studio 2017 and xamarin android forms for development. A simple nw app is failing to get deployed with zipalign.exe error. below are my build logs

 

1>C:\Program Files\Java\jdk1.8.0_152\\bin\jarsigner.exe -keystore

"C:\Users\\AppData\Local\Xamarin\Mono for

Android\debug.keystore" -storepass android -keypass android -digestalg

SHA1 -sigalg md5withRSA -signedjar bin\Debug\\App5.App5-Signed-

Unaligned.apk C:\Users\

androiddebugkey

 

1>No -tsa or -tsacert is provided and this jar is not timestamped. Without a timestamp, users may not be able to validate this jar after the signer certificate's expiration date (2048-01-09) or after any future revocation date.

 

1>C:\Program Files (x86)\Android\android-sdk\build-

tools\25.0.3\zipalign.exe 4 "C:\Users\

Unaligned.apk" "bin\Debug\\App5.App5-Signed.apk"

1>"zipalign.exe" exited with code -1073741819