Error: found in negative cache / failed to load

Hi Folks,

I have been extending the Report Quality Issue (UI_QM_CREATE) fiori app.

Tried in two ways,

1. Web IDE

As per the App Extensions guide i have been extended the app and tested the Extension application by choosing the index.html.

here am facing the error, please find the below image.

2. Eclipse IDE

Here, standard application imported into Eclipse IDE.

While Executing the application from Fiorisandboxaunchpad am getting below error.

Not extension application directly am executing imported standard application from sandbox launchpad.

Please help me out to extend the application.

Regards,

Kiran.