Ember cordova "cannot read property 'toLowerCase' of undefined" in android app

[bloodknight2010]

I can build generate android app successfully . I can run the app but got following error.
I attached my error.

"ember-cordova": "^1.0.9",
.ember-cli: 3.4.4
node: 10.15.0
os: linux x64

Pls help me