Jarsigner : unable to open jar file

using ionic 5
ionic cordova build android --prod --release

it created

E:\test ionic\durai\durai_test\platforms\android\app\build\outputs\apk\release\app-release-unsigned.apk

keytool -genkey -v -keystore my-release-key.keystore -alias durai -keyalg RSA -keysize 2048 -validity 10000

it created my-release-key.keystore in project directory

jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore my-release-key.keystore app-release-unsigned.apk durai

ERROR:
jarsigner: unable to open jar file: ./platforms/android/app/build/outputs/apk/release/app-release-unsigned.apk