No OIDC login options shown if `dcache-view.oidc-authz-endpoint-extra` not defined.

[paulmillar]

Recent update introduced support for the dcache-view.oidc-authz-endpoint-extra dCacheView configuration option.

This is made available in dCache using the configuration property frontend.static!dcache-view.oidc-authz-endpoint-extra

If this configuration property is undefined then no OIDC login options are shown.

A work-around is to define this property with - as the value; e.g.,

frontend.static!dcache-view.oidc-authz-endpoint-extra = -

An error is reported in the browser console:

[](https://dcache-demo.desy.de/scripts/tasks/server-side-event/channel-related-task.js)Uncaught TypeError: window.CONFIG['dcache-view.oidc-authz-endpoint-extra'] is undefined
    LoginformWithOpenid https://dcache-demo.desy.de/elements/elements.html-234.js:10
    _stampTemplate https://dcache-demo.desy.de/elements/elements.html-10.js:408
    _stampTemplate https://dcache-demo.desy.de/elements/elements.html-11.js:2303
    ready https://dcache-demo.desy.de/elements/elements.html-12.js:611
    ready https://dcache-demo.desy.de/elements/elements.html-235.js:15
    _enableProperties https://dcache-demo.desy.de/elements/elements.html-9.js:516
    connectedCallback https://dcache-demo.desy.de/elements/elements.html-12.js:595
    connectedCallback https://dcache-demo.desy.de/elements/elements.html-235.js:38
    <anonymous> https://dcache-demo.desy.de/elements/elements.html-142.js:132
    middleware https://dcache-demo.desy.de/elements/elements.html-141.js:474
    nextEnter https://dcache-demo.desy.de/elements/elements.html-141.js:306
    middleware https://dcache-demo.desy.de/elements/elements.html-141.js:475
    nextEnter https://dcache-demo.desy.de/elements/elements.html-141.js:306
    middleware https://dcache-demo.desy.de/elements/elements.html-141.js:475
    nextEnter https://dcache-demo.desy.de/elements/elements.html-141.js:306
    middleware https://dcache-demo.desy.de/elements/elements.html-141.js:475
    nextEnter https://dcache-demo.desy.de/elements/elements.html-141.js:306
    middleware https://dcache-demo.desy.de/elements/elements.html-141.js:475
    nextEnter https://dcache-demo.desy.de/elements/elements.html-141.js:306
    <anonymous> https://dcache-demo.desy.de/elements/elements.html-142.js:29
    middleware https://dcache-demo.desy.de/elements/elements.html-141.js:474
    nextEnter https://dcache-demo.desy.de/elements/elements.html-141.js:306
    nextExit https://dcache-demo.desy.de/elements/elements.html-141.js:294
    dispatch https://dcache-demo.desy.de/elements/elements.html-141.js:310
    show https://dcache-demo.desy.de/elements/elements.html-141.js:201
    page https://dcache-demo.desy.de/elements/elements.html-141.js:101
    _login https://dcache-demo.desy.de/elements/elements.html-153.js:78
    _login https://dcache-demo.desy.de/elements/elements.html-143.js:14
    handler https://dcache-demo.desy.de/elements/elements.html-10.js:79
    _fire https://dcache-demo.desy.de/elements/elements.html-16.js:552
    forward https://dcache-demo.desy.de/elements/elements.html-16.js:914
    click https://dcache-demo.desy.de/elements/elements.html-16.js:884
    _handleNative https://dcache-demo.desy.de/elements/elements.html-16.js:342