If your API is returning errors, check the endpoint URLs, review request parameters, and inspect server logs for details.

When your API returns errors, it can disrupt the functionality of your application. To troubleshoot API errors effectively, start by checking the endpoint URLs. Ensure that the URLs are correct and correspond to the intended resources. A common mistake is misconfigured routes or typos in the endpoint URLs. Next, review the request parameters being sent to the API. Ensure that you are including all required parameters and that they are in the correct format. For instance, numeric parameters should not be sent as strings, and any required headers (like authentication tokens) should be properly included in the request. Examine the API documentation for guidance on valid parameters and their expected formats. Inspecting server logs can provide valuable insights into the underlying issues causing the errors. Check logs for any error messages or stack traces that may indicate what went wrong. Depending on your server setup, logs may be found in a specific directory or accessible via monitoring tools. If your API is returning a specific error code (like 404, 500, or 401), refer to documentation or online resources to understand what these codes mean and what actions to take. Additionally, consider using tools like Postman or Insomnia to test API endpoints directly. This can help isolate issues by allowing you to manually send requests and observe the responses. Finally, if the problem persists, check community forums or support channels for similar issues encountered by other developers.