Coding⏱️ 3 min read📅 2026-06-03

How to Fix: Getting "TypeError: Failed to fetch" when the request hasn't actually failed

Fetch API error when response is received

Quick Answer: Check the fetch options and headers to ensure they are not causing the issue.

📋 Table of Contents

  1. 🛑 Root Causes of the Error
  2. 🚀 How to Resolve This Issue
  3. 💡 Conclusion

The 'TypeError: Failed to fetch' error is frustrating when it occurs unexpectedly, even if the request hasn't actually failed. This issue affects users of your React application who are using the Fetch API to send GET requests.

This error can be particularly vexing because it appears that the request has indeed failed, but in reality, no data was returned from the server.

🛑 Root Causes of the Error

  • The primary reason for this error is a mismatch between the expected response type and the actual response type received from the server. When the Fetch API is configured to expect a certain response type (e.g., JSON), it may throw a TypeError if an unexpected response type is received.
  • Another possible cause of this error could be a network issue, where the request takes too long or times out, causing the Fetch API to throw a timeout-related error.

🚀 How to Resolve This Issue

Checking Response Type

  1. Step 1: Inspect your code to ensure that you are correctly specifying the expected response type when making the GET request. You can do this by adding the `mode` option and setting it to 'cors' or 'no-cors', depending on your server's configuration.
  2. Step 2: Verify that the server is sending the correct response type (e.g., JSON) in the headers or body of the response. If the response type is incorrect, you may need to adjust your client-side code to handle the unexpected response type.
  3. Step 3: Use the `response.headers.get()` method to inspect the response headers and ensure that the expected response type is being sent.

Checking Network Connection

  1. Step 1: Verify that your network connection is stable and functioning correctly. You can do this by using a tool like `curl` or a web browser to test the request directly.
  2. Step 2: Check the server logs for any errors or issues related to the network connection or request processing.
  3. Step 3: Consider implementing retry logic in your code to handle temporary network issues or timeouts.

💡 Conclusion

To resolve the 'TypeError: Failed to fetch' error, focus on verifying that the expected response type is being sent from the server and that the client-side code is correctly configured to handle it. If you suspect a network issue, consider implementing retry logic and inspecting server logs for any errors or issues.

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