📄 ai-sdk/docs/troubleshooting/stream-text-not-working
File: stream-text-not-working.md | Updated: 11/15/2025
Source: https://ai-sdk.dev/docs/troubleshooting/stream-text-not-working
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v5 (Latest)
AI SDK 5.x
Model Context Protocol (MCP) Tools
Client-Side Function Calls Not Invoked
Server Actions in Client Components
useChat/useCompletion stream output contains 0:... instead of text
Tool Invocation Missing Result Error
Streaming Not Working When Deployed
Streaming Not Working When Proxied
Getting Timeouts When Deploying on Vercel
useChat Failed to Parse Stream
Server Action Plain Objects Error
Custom headers, body, and credentials not working with useChat
TypeScript performance issues with Zod and AI SDK 5
Repeated assistant messages in useChat
onFinish not called when stream is aborted
Tool calling with generateObject and streamObject
Abort breaks resumable streams
Streaming Status Shows But No Text Appears
Stale body values with useChat
Unsupported model version error
Object generation failed with OpenAI
Model is not assignable to type "LanguageModelV1"
TypeScript error "Cannot find namespace 'JSX'"
React error "Maximum update depth exceeded"
Jest: cannot find module '@ai-sdk/rsc'
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I am using streamText
function, and it does not work. It does not throw any errors and the stream is only containing error parts.
streamText immediately starts streaming to enable sending data without waiting for the model. Errors become part of the stream and are not thrown to prevent e.g. servers from crashing.
To log errors, you can provide an onError callback that is triggered when an error occurs.
import { streamText } from 'ai';
const result = streamText({ model: 'openai/gpt-4.1', prompt: 'Invent a new holiday and describe its traditions.', onError({ error }) { console.error(error); // your error logging logic here },});
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