atom.workspaceView is no longer available.
In most cases you will not need the view. See the Workspace docs for
alternatives: https://atom.io/docs/api/latest/Workspace.
If you do need the view, please use atom.views.getView(atom.workspace),
which returns an HTMLElement.
Atom.Object.defineProperty.get (/Applications/Atom.app/Contents/Resources/app/src/atom.js:54:11)
Object.activate (/Users/dimitrios/.atom/packages/flake8/lib/flake8.coffee:116:9)
atom.workspaceView is no longer available.
In most cases you will not need the view. See the Workspace docs for
alternatives: https://atom.io/docs/api/latest/Workspace.
If you do need the view, please use
atom.views.getView(atom.workspace),which returns an HTMLElement.