Access to fetch at 'https://generativelanguage.googleapis.com/v1beta/models/gemini-3.1-pro-preview:streamGenerateContent?alt=sse' from origin 'https://localhost:3721' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.
orchestrator.ts:132  POST https://generativelanguage.googleapis.com/v1beta/models/gemini-3.1-pro-preview:streamGenerateContent?alt=sse net::ERR_FAILED
(anonymous) @ index.mjs:2380
(anonymous) @ index.mjs:2335
doStream @ index.mjs:1684
await in doStream
(anonymous) @ index.mjs:7205
await in (anonymous)
(anonymous) @ index.mjs:2279
(anonymous) @ NoopContextManager.js:53
(anonymous) @ context.js:88
(anonymous) @ index.mjs:2279
startActiveSpan @ index.mjs:2199
recordSpan @ index.mjs:2273
await in recordSpan
(anonymous) @ index.mjs:7163
_retryWithExponentialBackoff @ index.mjs:2597
(anonymous) @ index.mjs:2584
streamStep @ index.mjs:7162
await in streamStep
(anonymous) @ index.mjs:7574
await in (anonymous)
(anonymous) @ index.mjs:2279
(anonymous) @ NoopContextManager.js:53
(anonymous) @ context.js:88
(anonymous) @ index.mjs:2279
startActiveSpan @ index.mjs:2199
recordSpan @ index.mjs:2273
await in recordSpan
constructor @ index.mjs:6910
streamText @ index.mjs:6414
(anonymous) @ orchestrator.ts:132
await in (anonymous)
(anonymous) @ App.tsx:79
(anonymous) @ ChatPanel.tsx:109
(anonymous) @ ChatPanel.tsx:116
executeDispatch @ react-dom-client.development.js:19116
runWithFiberInDEV @ react-dom-client.development.js:871
processDispatchQueue @ react-dom-client.development.js:19166
(anonymous) @ react-dom-client.development.js:19767
batchedUpdates$1 @ react-dom-client.development.js:3255
dispatchEventForPluginEventSystem @ react-dom-client.development.js:19320
dispatchEvent @ react-dom-client.development.js:23585
dispatchDiscreteEvent @ react-dom-client.development.js:23553
<textarea>
(anonymous) @ react-jsx-runtime.development.js:335
(anonymous) @ jsxSlot.js:15
jsx @ createJSX.js:14
(anonymous) @ renderTextarea.js:8
(anonymous) @ Textarea.js:13
react_stack_bottom_frame @ react-dom-client.development.js:25904
renderWithHooks @ react-dom-client.development.js:7662
updateForwardRef @ react-dom-client.development.js:9724
beginWork @ react-dom-client.development.js:12117
runWithFiberInDEV @ react-dom-client.development.js:871
performUnitOfWork @ react-dom-client.development.js:17641
workLoopSync @ react-dom-client.development.js:17469
renderRootSync @ react-dom-client.development.js:17450
performWorkOnRoot @ react-dom-client.development.js:16504
performSyncWorkOnRoot @ react-dom-client.development.js:18972
flushSyncWorkAcrossRoots_impl @ react-dom-client.development.js:18814
processRootScheduleInMicrotask @ react-dom-client.development.js:18853
(anonymous) @ react-dom-client.development.js:18991
<Textarea>
(anonymous) @ react-jsx-dev-runtime.development.js:335
(anonymous) @ ChatPanel.tsx:164
react_stack_bottom_frame @ react-dom-client.development.js:25904
renderWithHooks @ react-dom-client.development.js:7662
updateFunctionComponent @ react-dom-client.development.js:10166
beginWork @ react-dom-client.development.js:11778
runWithFiberInDEV @ react-dom-client.development.js:871
performUnitOfWork @ react-dom-client.development.js:17641
workLoopSync @ react-dom-client.development.js:17469
renderRootSync @ react-dom-client.development.js:17450
performWorkOnRoot @ react-dom-client.development.js:16504
performSyncWorkOnRoot @ react-dom-client.development.js:18972
flushSyncWorkAcrossRoots_impl @ react-dom-client.development.js:18814
processRootScheduleInMicrotask @ react-dom-client.development.js:18853
(anonymous) @ react-dom-client.development.js:18991
<ChatPanel>
(anonymous) @ react-jsx-dev-runtime.development.js:335
(anonymous) @ App.tsx:110
react_stack_bottom_frame @ react-dom-client.development.js:25904
renderWithHooks @ react-dom-client.development.js:7662
updateFunctionComponent @ react-dom-client.development.js:10166
beginWork @ react-dom-client.development.js:11778
runWithFiberInDEV @ react-dom-client.development.js:871
performUnitOfWork @ react-dom-client.development.js:17641
workLoopSync @ react-dom-client.development.js:17469
renderRootSync @ react-dom-client.development.js:17450
performWorkOnRoot @ react-dom-client.development.js:16504
performSyncWorkOnRoot @ react-dom-client.development.js:18972
flushSyncWorkAcrossRoots_impl @ react-dom-client.development.js:18814
processRootScheduleInMicrotask @ react-dom-client.development.js:18853
(anonymous) @ react-dom-client.development.js:18991
index.mjs:6395 TypeError: Failed to fetch
    at postToApi (index.mjs:2380:28)
    at postJsonToApi (index.mjs:2335:7)
    at GoogleGenerativeAILanguageModel.doStream (index.mjs:1684:56)
    at async fn (index.mjs:7205:27)
    at async index.mjs:2279:24
    at async _retryWithExponentialBackoff (index.mjs:2597:12)
    at async streamStep (index.mjs:7162:17)
    at async fn (index.mjs:7574:9)
    at async index.mjs:2279:24