browser-error-console.txt

Logging system initialised at Tue Apr 02 2019 14:48:28 GMT+0200 (Mitteleuropäische Sommerzeit) common.js:199:17
[HMR] connected client.js:92
The above error occurred in the <Map> component:
    in Map (created by MDXContent)
    in div (created by MDXTag)
    in MDXTag (created by Context.Consumer)
    in Component (created by MDXContent)
    in MDXContent (created by Component)
    in Component (created by Context.Consumer)
    in Component (created by Context.Consumer)
    in Component (at template.js:11)
    in div (created by Context.Consumer)
    in StaticQuery (created by Layout)
    in Layout (at template.js:9)
    in _default (created by HotExported_default)
    in AppContainer (created by HotExported_default)
    in HotExported_default (created by PageRenderer)
    in PageRenderer (created by JSONStore)
    in JSONStore (created by EnsureResources)
    in ScrollContext (created by EnsureResources)
    in RouteUpdates (created by EnsureResources)
    in EnsureResources (created by RouteHandler)
    in RouteHandler (created by Root)
    in div (created by FocusHandlerImpl)
    in FocusHandlerImpl (created by Context.Consumer)
    in FocusHandler (created by RouterImpl)
    in RouterImpl (created by LocationProvider)
    in LocationProvider (created by Context.Consumer)
    in Location (created by Context.Consumer)
    in Router (created by Root)
    in Root
    in MDXProvider (created by Component)
    in MDXScopeProvider (created by Component)
    in Component (created by Context.Consumer)
    in Component
    in _default

React will try to recreate this component tree from scratch using the error boundary you provided, AppContainer. index.js:2177
    React 14
    unstable_runWithPriority scheduler.development.js:255
    React 14
    js app.js:56
TypeError: "calling a builtin Map constructor without new is forbidden"
    React 20
    js app.js:56
index.js:2177
unreachable code after return statement[Weitere Informationen] bootstrap:68
TypeError: calling a builtin Map constructor without new is forbidden