FAILURE: Build failed with an exception.

[goodforever]

FAILURE: Build failed with an exception.

• Where:
  Build file '/Users/foo/Leaflet/android/app/build.gradle' line: 58

• What went wrong:
  A problem occurred evaluating project ':app'.

path may not be null or empty string. path='null'

my key.properties
......
keyAlias=key
storeFile=key.jks

line: 58 is storeFile file(keystoreProperties['storeFile'])