# Troubleshooting Bad API Requests

## Frequently Asked Questions

### How do I fix a “No Response Received” error?

See the instructions at [Troubleshooting Network Errors](/how-to/troubleshooting/troubleshooting-network-errors.md).

### My Request works in Postman. What’s wrong?

Here are the most common reasons a request works in Postman, but doesn’t work in PixieBrix:

**Incorrect use of the data** **field in PixieBrix to pass JSON**

To pass a data payload in PixieBrix, provide an object or variable:

✅ **Correct**

<figure><img src="/files/uSfLR6nIaFBUxzRwtFIB" alt=""><figcaption></figcaption></figure>

❌ **Incorrect:**

<figure><img src="/files/RLgaEFkY8LachMYstKc4" alt=""><figcaption></figcaption></figure>

**Inconsistent headers**

Postman automatically adds some headers to requests. Those headers are optional for most APIs. However, the API you’re calling might require those headers

*Uncommon: header name capitalization.* PixieBrix automatically lowercases header names. However, some APIs require certain header names to be capitalized.

**Authentication**

If your Postman request is in a Postman Collection, Postman maybe including authentication information (headers/payload) with the request

**Invalid/Self-Trusted SSL Certificate**

Your Postman might be configured not to verify the SSL certificate.

In order to enable PixieBrix to call hosts with untrusted certificates, you must instruct Chrome to trust the certificate.

* Watch: [Trusting a Self-Signed Certificate on Windows](https://www.youtube.com/watch?v=zTr64CU4wm4)


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