Error on initial load of using latest engine

[smilo7]

Using the latest version of engine. Upon first load of a page, get this error. To fix you have to refresh.

Uncaught (in promise) 
Exception { name: "NS_ERROR_FAILURE", message: "", result: 2147500037, filename: "http://localhost:5000/build/main.js", lineNumber: 2725, columnNumber: 0, data: null, stack: "createEventListeners/</history[eventName]@http://localhost:5000/build/main.js:2725:39\nasync*goto@http://localhost:5000/build/main.js:1862:31\nhandleButtonClick@http://localhost:5000/build/main.js:46372:9\nclick_handler@http://localhost:5000/build/main.js:46470:46\nEventListener.handleEvent*listen@http://localhost:5000/build/main.js:238:10\nm@http://localhost:5000/build/main.js:46193:6\nmount_component@http://localhost:5000/build/main.js:901:26\nm@http://localhost:5000/build/main.js:2281:20\nm@http://localhost:5000/build/main.js:1232:18\nmount_component@http://localhost:5000/build/main.js:901:26\nm@http://localhost:5000/build/main.js:2375:20\nm@http://localhost:5000/build/main.js:2090:20\nm@http://localhost:5000/build/main.js:2474:29\nmount_component@http://localhost:5000/build/main.js:901:26\nm@http://localhost:5000/build/main.js:2151:19\nm@http://localhost:5000/build/main.js:2193:27\nm@http://localhost:5000/build/main.js:48179:18\nmount_component@http://localhost:5000/build/main.js:901:26\nm@http://localhost:5000/build/main.js:2281:20\nm@http://localhost:5000/build/main.js:1232:18\nmount_component@http://localhost:5000/build/main.js:901:26\nm@http://localhost:5000/build/main.js:2375:20\nm@http://localhost:5000/build/main.js:2090:20\nm@http://localhost:5000/build/main.js:2474:29\nmount_component@http://localhost:5000/build/main.js:901:26\nm@http://localhost:5000/build/main.js:2805:19\np@http://localhost:5000/build/main.js:2859:15\nupdate@http://localhost:5000/build/main.js:503:36\nflush@http://localhost:5000/build/main.js:471:19\npromise callback*schedule_update@http://localhost:5000/build/main.js:446:26\nmake_dirty@http://localhost:5000/build/main.js:933:9\ninit$1/$$.ctx<@http://localhost:5000/build/main.js:971:31\ncallback@http://localhost:5000/build/main.js:2902:38\nupdatePage/<@http://localhost:5000/build/main.js:2696:15\npromise callback*updatePage@http://localhost:5000/build/main.js:2693:27\ndoInit/initTimeout<@http://localhost:5000/build/main.js:2928:14\nsetTimeout handler*doInit@http://localhost:5000/build/main.js:2924:17\ninstance$1l/$$self.$$.update@http://localhost:5000/build/main.js:2941:16\ninit$1@http://localhost:5000/build/main.js:976:8\nRouter@http://localhost:5000/build/main.js:2951:9\ncreate_fragment@http://localhost:5000/build/main.js:49225:11\ninit$1@http://localhost:5000/build/main.js:980:37\nApp@http://localhost:5000/build/main.js:49295:9\nHMR@http://localhost:5000/build/main.js:35:12\n@http://localhost:5000/build/main.js:49299:4\n" }
main.js:2725
    eventName http://localhost:5000/build/main.js:2728
    InterpretGeneratorResume self-hosted:1482
    AsyncFunctionNext self-hosted:692
    (Async: async)
    goto http://localhost:5000/build/main.js:1862
    handleButtonClick http://localhost:5000/build/main.js:46372
    click_handler http://localhost:5000/build/main.js:46470
    (Async: EventListener.handleEvent)
    listen http://localhost:5000/build/main.js:238
    m http://localhost:5000/build/main.js:46193
    mount_component http://localhost:5000/build/main.js:901
    m http://localhost:5000/build/main.js:2281
    m http://localhost:5000/build/main.js:1232
    mount_component http://localhost:5000/build/main.js:901
    m http://localhost:5000/build/main.js:2375
    m http://localhost:5000/build/main.js:2090
    m http://localhost:5000/build/main.js:2474
    mount_component http://localhost:5000/build/main.js:901
    m http://localhost:5000/build/main.js:2151
    m http://localhost:5000/build/main.js:2193
    m http://localhost:5000/build/main.js:48179
    mount_component http://localhost:5000/build/main.js:901
    m http://localhost:5000/build/main.js:2281
    m http://localhost:5000/build/main.js:1232
    mount_component http://localhost:5000/build/main.js:901
    m http://localhost:5000/build/main.js:2375
    m http://localhost:5000/build/main.js:2090
    m http://localhost:5000/build/main.js:2474
    mount_component http://localhost:5000/build/main.js:901
    m http://localhost:5000/build/main.js:2805
    p http://localhost:5000/build/main.js:2859
    update http://localhost:5000/build/main.js:503
    flush http://localhost:5000/build/main.js:471
    (Async: promise callback)
    schedule_update http://localhost:5000/build/main.js:446
    make_dirty http://localhost:5000/build/main.js:933
    ctx http://localhost:5000/build/main.js:971
    callback http://localhost:5000/build/main.js:2902
    updatePage http://localhost:5000/build/main.js:2696
    (Async: promise callback)
    updatePage http://localhost:5000/build/main.js:2693
    initTimeout http://localhost:5000/build/main.js:2928
    (Async: setTimeout handler)
    doInit http://localhost:5000/build/main.js:2924
    update http://localhost:5000/build/main.js:2941
    init$1 http://localhost:5000/build/main.js:976
    Router http://localhost:5000/build/main.js:2951
    create_fragment http://localhost:5000/build/main.js:49225
    init$1 http://localhost:5000/build/main.js:980
    App http://localhost:5000/build/main.js:49295
    HMR http://localhost:5000/build/main.js:35
    <anonymous> http://localhost:5000/build/main.js:49299
    InnerModuleEvaluation self-hosted:2371
    evaluation self-hosted:2332