InAppBrowser.open not working in IOS 11.3.1

Installation

sudo npm install -g cordova
cordova -v (=> 8.0.0)
sudo cordova plugin add cordova-plugin-inappbrowser (
sudo cordova plugins (=> 3.0.0)
iOS 11.3.1
Xcode 9.4.1

Code in Xcode

var ref = cordova.InAppBrowser.open(url, '_blank', 'location=yes');

Error message

2018-07-22 18:57:15.996696+0200 IndiansOfTheUSA[3573:350666] CDVWebViewDelegate: Navigation started when state=1

2018-07-22 18:57:15.996938+0200 IndiansOfTheUSA[3573:350666] Failed to load webpage with error: CDVWebViewDelegate: Navigation started when state=1