React-native-router-flux: Actions.key(); is not working

[chenyu1990]

Version

"dependencies": {
"axios": "^0.18.0",
"react": "16.4.1",
"react-native": "0.56.0",
"react-native-router-flux": "^4.0.5",
"react-redux": "^5.0.7",
"redux": "^4.0.1",
"redux-thunk": "^2.3.0"
},
"devDependencies": {
"babel-jest": "23.6.0",
"babel-preset-react-native": "^5",
"jest": "23.6.0",
"react-test-renderer": "16.4.1",
"remote-redux-devtools": "^0.5.13"
}

Expected behaviour

Actions.login();

Actual behaviour

Actions.login(); // not working..
Actions.uc(); // not working..

[aksonov]

Please check example, it works fine. Please create reproducible example (Expo) to demonstrate the issue and re-open then.