Cannot read property 'suggest' of null

[stxm]

Error message when adding the dutch dictionary.

ErrorNotification.js:122 Exception in 'beforeContextMenuOpen' listener on ContextMenu {id: "editor-context-menu", _eventHandlers: Object}_eventHandlers: Objectid: "editor-context-menu"__proto__: Menu TypeError: Cannot read property 'suggest' of null TypeError: Cannot read property 'suggest' of null

language.json

{
    "locale": "nl_NL",
    "name": "Dutch (Nederlands)",
    "description": "Nederlandstalige spellingcontrole 2.10G ",
    "version": "2.10.0",
    "author": "OpenTaal (www.opentaal.org)",
    "url": "https://www.opentaal.org/",
    "releaseDate": "30 Nov 2016"
}

OS : Windows 10
Brackets Version : "1.12.0-17621"