Ionic android application error there was a network error file:///assets/www/#test.html

My code as:
< ion-view title=“testing” class=“header”>
< ion-content padding=“true”>
< div class=“item item-body item-text-wrap”>
< a href=“”>TEST
</ div>
</ ion-content>
</ ion-view>
I am able to open this link when i press back button on android it prompt error “application error there was a network error file:///assets/www/#test.html”. I am not using inappbrowser just href link to open. For web i tried no problem it open a new window on chrome.

May i know anyone have facing this and solution?