Attach InfoPath to AppWeb Library in SharePoint Online

Question

Error while adding InfoPath form to form Library created using SharePoint Hosted App which will be deployed to AppWeb.

This form template is browser-compatible, but it cannot be browser-enabled on the selected site message

I have Checked in following 3 ways as per suggestion found in Internet.They are

1. Go to Site Collection Feature -> Activate SharePoint Server Enterprise Site Collection features.
2. Go to SharePoint Admin Center -> InfoPath -> Allow users to browser-enable form templates checked
3. Go to Library Setting -> Advance Setting -> in Default Open Behaviour for Browser Enabled Template -> the radio button selected is for Use the server default (Open in the browser).

But still the InfoPath is dispalying error