Unexpected end of json #7715

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1. Davincible

   added

   bugSomething isn't workingSomething isn't working

   on Jan 10, 2026
2. github-actions

   assigned

   rekram1-node

   on Jan 10, 2026
3. github-actions commented on Jan 10, 2026

   

   github-actionsBot

   on Jan 10, 2026 – with GitHub Actions

   Contributor

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   This issue might be a duplicate of existing issues. Please check:

   • JSON parsing failed: Text #2188: JSON parsing failed: Text
   • [aws bedrock: anthropic opus 4.1] The arguments provided to the tool are invalid: Invalid input for tool write: JSON parsing failed: Text #1803: [aws bedrock: anthropic opus 4.1] The arguments provided to the tool are invalid: Invalid input for tool write: JSON parsing failed: Text
   • task tool "SyntaxError: Unexpected end of JSON input" #3034: task tool "SyntaxError: Unexpected end of JSON input"
   • [Bug] JSON Parse Error with Zhipu GLM-4.7: Stream chunks are concatenated incorrectly #7692: [Bug] JSON Parse Error with Zhipu GLM-4.7: Stream chunks are concatenated incorrectly
   • Incomplete JSON when writing out files #5890: Incomplete JSON when writing out files

   Feel free to ignore if none of these address your specific case.
4. coleleavitt commented on Jan 12, 2026

   

   coleleavitt

   on Jan 12, 2026

   Contributor

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   I've submitted a fix for this in #7888.

   Root cause: The SDK's client.gen.ts only handles empty responses when status === 204 or Content-Length === "0". When the server returns an empty body with status 200 and no Content-Length header, response.json() throws "Unexpected end of JSON input".

   Fix:

   1. Read response as text first, only parse JSON if non-empty
   2. Added try-catch with contextual error messages
   3. Fixed server OPTIONS handler to return proper 204 status

   This is a more complete fix than #7618 - it prevents the crash entirely rather than just improving the error message.

   ❤️React with ❤️1Reacted by David Brouwer
5. mrlubos commented on Jan 13, 2026

   

   mrlubos

   on Jan 13, 2026

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   @Davincible this should be handled upstream hey-api/hey-api#3202
6. coleleavitt

   added a commit that references this issue on Jan 16, 2026

   chore(sdk): update @hey-api/openapi-ts to 0.90.4

   ...

   This issue will close once commit 927c494 is merged into the 'dev' branch.

   927c494
7. rekram1-node

   closed this as completedin #8921on Jan 16, 2026