I recently disabled the XML attribute inspector that would prompt messages such as the below in the XML in real time before running the app. Now since I disabled it I am only able to see the errors when I run my app.

[![enter image description here](https://i.stack.imgur.com/SgCPQ.png)](https://i.stack.imgur.com/SgCPQ.png)

How can i turn on the instant "Attribute inspector" back on?

It would be displayed as a red light bulb to the left of the XML such as:

[![enter image description here](https://i.stack.imgur.com/edE1Z.png)](https://i.stack.imgur.com/edE1Z.png)