The error was thrown from the vim-mode package. This issue has already been reported

[rubielhum]

Error: Failed to execute 'remove' on 'Element': The node to be removed is no longer a child of this node. Perhaps it was moved in a 'blur' event handler?
at Error (native)
at vim-normal-mode-input.VimNormalModeInputElement.removePanel (file:///C:/Users/My/.atom/packages/vim-mode/lib/view-models/vim-normal-mode-input-element.coffee:60:12)
at vim-normal-mode-input.VimNormalModeInputElement.confirm (file:///C:/Users/My/.atom/packages/vim-mode/lib/view-models/vim-normal-mode-input-element.coffee:46:6)
at file:///C:/Users/My/.atom/packages/vim-mode/lib/view-models/vim-normal-mode-input-element.coffee:33:10
at Function.module.exports.Emitter.simpleDispatch (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\node_modules\event-kit\lib\emitter.js:25:20)
at Emitter.module.exports.Emitter.emit (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\node_modules\event-kit\lib\emitter.js:141:34)
at TextBuffer.module.exports.TextBuffer.emitDidChangeEvent (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\node_modules\text-buffer\lib\text-buffer.js:701:26)
at TextBuffer.module.exports.TextBuffer.applyChange (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\node_modules\text-buffer\lib\text-buffer.js:685:18)
at TextBuffer.module.exports.TextBuffer.setTextInRange (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\node_modules\text-buffer\lib\text-buffer.js:574:25)
at Selection.module.exports.Selection.insertText (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\src\selection.js:480:49)
at C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\src\text-editor.js:1127:35
at C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\src\text-editor.js:1166:34
at TextBuffer.module.exports.TextBuffer.transact (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\node_modules\text-buffer\lib\text-buffer.js:849:24)
at TextEditor.module.exports.TextEditor.transact (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\src\text-editor.js:1599:32)
at C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\src\text-editor.js:1160:30
at TextEditor.module.exports.TextEditor.mergeSelections (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\src\text-editor.js:2577:24)
at TextEditor.module.exports.TextEditor.mergeIntersectingSelections (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\src\text-editor.js:2539:41)
at TextEditor.module.exports.TextEditor.mutateSelectedText (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\src\text-editor.js:1158:25)
at TextEditor.module.exports.TextEditor.insertText (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\src\text-editor.js:1124:25)
at TextEditorComponent.module.exports.TextEditorComponent.onTextInput (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\src\text-editor-component.js:480:32)
at HTMLDivElement. (C:\Users\My\AppData\Local\atom\app-1.18.0\resources\app\src\text-editor-component.js:3:65)

[rsese]

Thanks for the report! Closing since this package has been deprecated in favor of vim-mode-plus:

https://github.com/atom/vim-mode#current-status---deprecated-in-favor-of-vim-mode-plus

You may want to give that package a try.