HTMLElement.rootElement is deprecated.

[ghost]

The contents of atom-text-editor elements are no longer encapsulated
within a shadow DOM boundary. Please, stop using rootElement and access
the editor contents directly instead.

HTMLElement.rootElement (C:\Users\Nirali\AppData\Local\atom\app-1.19.6\resources\app\src\text-editor-element.js:23:10)
Tooltip.getFromShadowDom (C:\Users\Nirali\.atom\packages\omnisharp-atom\dist\features\lookup.js:214:27)
new Tooltip (C:\Users\Nirali\.atom\packages\omnisharp-atom\dist\features\lookup.js:69:27)
<unknown> (C:\Users\Nirali\.atom\packages\omnisharp-atom\dist\features\lookup.js:39:27)
_next (C:\Users\Nirali\.atom\packages\omnisharp-atom\dist\server\omni.js:420:17)
SafeSubscriber.__tryOrUnsub (C:\Users\Nirali\.atom\packages\omnisharp-atom\node_modules\rxjs\Subscriber.js:238:16)