I\'m developing android app under intellij and gradle. and using following way to generate keystore file:
keytool -genkey -v -keystore my-release-key.keystor
Check your keystore file for first, in you example you creating file with name my-release-key.keystore. If its correct and really present in folder Users/bournewang/Documents/Project check alias, in your example it is -alias alias_name, but in config you specified alias mike
In order to find out what's wrong you can use gradle's signingReport command.
On mac:
./gradlew signingReport
On Windows:
gradlew signingReport