Version

3.2.0-beta.4

Reproduction link

http://127.0.0.1:8000/user/dashboard

Steps to reproduce

Unhandled error during execution of scheduler flush. This is likely a Vue internals bug. Please open an issue at https://new-issue.vuejs.org/?repo=vuejs/vue-next at at at at <Dashboard jetstream=

What is expected?

app.js:14148 Uncaught (in promise) TypeError: Cannot read property 'insertBefore' of null at insert (app.js:14148) at mountElement (app.js:11071) at processElement (app.js:11012) at patch (app.js:10920) at componentEffect (app.js:11457) at reactiveEffect (app.js:5265) at effect (app.js:5240) at setupRenderEffect (app.js:11403) at mountComponent (app.js:11362) at processComponent (app.js:11320)

What is actually happening?

app.js:14148 Uncaught (in promise) TypeError: Cannot read property 'insertBefore' of null at insert (app.js:14148) at mountElement (app.js:11071) at processElement (app.js:11012) at patch (app.js:10920) at componentEffect (app.js:11457) at reactiveEffect (app.js:5265) at effect (app.js:5240) at setupRenderEffect (app.js:11403) at mountComponent (app.js:11362) at processComponent (app.js:11320)

app.js:14148 Uncaught (in promise) TypeError: Cannot read property 'insertBefore' of null at insert (app.js:14148) at mountElement (app.js:11071) at processElement (app.js:11012) at patch (app.js:10920) at componentEffect (app.js:11457) at reactiveEffect (app.js:5265) at effect (app.js:5240) at setupRenderEffect (app.js:11403) at mountComponent (app.js:11362) at processComponent (app.js:11320)

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