The developer added the configuration below in "default/app.conf" that prevents you from accessing the add-on's web UI. This may be by mistake by the developer. You can fix this by adding your own "local/app.conf" within the addon's directory with the config below and set "is_visible = 1" for the add-on to be navigable.
[ui]
is_visible = 0
label = mqinput
is_visible = <boolean>
* Indicates if this app is visible/navigable as an app in Splunk Web.
* Apps require at least one view to be available in Splunk Web.
