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BODY_NOT_A_STRING_FROM_FUNCTION

Last updated March 4, 2025

The BODY_NOT_A_STRING_FROM_FUNCTION error occurs when a function returns a body that is not a string. It's essential that functions return a string body to ensure that they can be correctly processed and executed.

502

BODY_NOT_A_STRING_FROM_FUNCTION:

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Troubleshoot

I'm encountering an error and reviewing the docs at /flg~eyJhbGciOiJIUzI1NiJ9._v7-_v39.f3M12-KAPZCzcefUX_oPWq-I0u4iAhoJCQaxpxor_bI/docs/errors/BODY_NOT_A_STRING_FROM_FUNCTION to understand what's happening. Please help me resolve this by: 1. **Suggest the fix**: Analyze my codebase context and propose what needs to be changed to resolve this error 2. **Explain the root cause**: Break down why this error occurred: - What was the code actually doing vs. what it needed to do? - What conditions triggered this specific error? - What misconception or oversight led to this? 3. **Teach the concept**: Help me understand the underlying principle: - Why does this error exist and what is it protecting me from? - What's the correct mental model for this concept? - How does this fit into the broader framework/language design? 4. **Show warning signs**: Help me recognize this pattern in the future: - What should I look out for that might cause this again? - Are there similar mistakes I might make in related scenarios? - What code smells or patterns indicate this issue? 5. **Discuss alternatives**: Explain if there are different valid approaches and their trade-offs My goal is to fix the immediate issue while building lasting understanding so I can avoid and resolve similar errors independently in the future.

To troubleshoot this error, follow these steps:

  1. Check function return type: Ensure that the function is structured to return a string. If the function is returning a different data type, modify the function to return a string, using JSON.stringify() if necessary
  2. Review function code: Inspect the function code for any logic that might cause a non-string value to be returned
  3. Check data types: If the function is processing input data or retrieving data from external sources, ensure that the data is being correctly converted to a string before being returned
  4. Review function logs: Check the function logs for any errors or warnings that might indicate why a non-string value is being returned

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