Es ist ein Fehler aufgetreten

Das Seminar ist nicht gültig.

Error: Adapter operation failed
    at new Error (native)
    at Error.r (C:\home\site\wwwroot\dist\assets\vendor-b6bc84b17a513b1c15b1f24426300efb.js:6459:19)
    at r.handleResponse (C:\home\site\wwwroot\dist\assets\vendor-b6bc84b17a513b1c15b1f24426300efb.js:7582:84)
    at r.handleResponse (C:\home\site\wwwroot\dist\assets\vendor-b6bc84b17a513b1c15b1f24426300efb.js:10971:171)
    at r [as handleResponse] (C:\home\site\wwwroot\dist\assets\vendor-b6bc84b17a513b1c15b1f24426300efb.js:3483:9)
    at s (C:\home\site\wwwroot\dist\assets\vendor-b6bc84b17a513b1c15b1f24426300efb.js:6500:14)
    at C:\home\site\wwwroot\dist\assets\vendor-b6bc84b17a513b1c15b1f24426300efb.js:6543:8
    at Object.Ember.RSVP.Promise.f.error (C:\home\site\wwwroot\dist\assets\vendor-b6bc84b17a513b1c15b1f24426300efb.js:6543:19)
    at fire (C:\home\site\wwwroot\node_modules\jquery-deferred\lib\jquery-callbacks.js:78:30)
    at Object.fireWith (C:\home\site\wwwroot\node_modules\jquery-deferred\lib\jquery-callbacks.js:188:7)
    at Object.fire [as reject] (C:\home\site\wwwroot\node_modules\jquery-deferred\lib\jquery-callbacks.js:195:10)
    at onError (C:\home\site\wwwroot\node_modules\najax\lib\najax.js:208:9)
    at dataHandler (C:\home\site\wwwroot\node_modules\najax\lib\najax.js:173:9)
    at IncomingMessage.<anonymous> (C:\home\site\wwwroot\node_modules\najax\lib\najax.js:198:9)
    at emitNone (events.js:91:20)
    at IncomingMessage.emit (events.js:185:7)
    at endReadableNT (_stream_readable.js:974:12)
    at _combinedTickCallback (internal/process/next_tick.js:74:11)
    at process._tickCallback (internal/process/next_tick.js:98:9)