---
title: "How to troubleshoot unable to render 'Numbered Headings' macro error"
canonical: "https://support.appfire.com/space/SUPPORT/89129546/How%20to%20troubleshoot%20unable%20to%20render%20'Numbered%20Headings'%20macro%20error"
format: markdown
---
## Problem Statement

> ℹ️ When you try to apply Numbered Headings for some content by providing a set of parameters, you may get, “unable to render Numbered Heading macro” message.

## Error Message

```
Unable to render 'Numbered Headings' macro
An unexpected error has occurred, please create a bug at portal
```

## Log Entries

```
2022-09-14 09:38:02,647 WARN [http-nio-8090-exec-10] [plugins.numberedheadings.macro.XHTMLNumberedHeadingsMacro] execute The Numbered Headings plugin threw an unexpected exception...
 -- url: /display/MS/test+for+NH | page: 362577930 | traceId: be724132dee95287 | userName: automation | referer: http://<Jira-URL>/pages/editpage.action?pageId=362577930 | action: viewpage
java.lang.NullPointerException
	at nl.avisi.confluence.plugins.numberedheadings.NumberFormatterManager.fromString(NumberFormatterManager.java:41)
	at nl.avisi.confluence.plugins.numberedheadings.macro.parameters.NumberedHeadingsParameterSupport.createNumberingFormat(NumberedHeadingsParameterSupport.java:217)
	at nl.avisi.confluence.plugins.numberedheadings.macro.parameters.NumberedHeadingsParameterSupport.parseFormatter(NumberedHeadingsParameterSupport.java:206)
	at nl.avisi.confluence.plugins.numberedheadings.macro.parameters.NumberedHeadingsParameterSupport.parseCustomHeadingValue(NumberedHeadingsParameterSupport.java:181)
	at nl.avisi.confluence.plugins.numberedheadings.macro.parameters.NumberedHeadingsParameterSupport.parseNumberFormatters(NumberedHeadingsParameterSupport.java:166)
	at nl.avisi.confluence.plugins.numberedheadings.macro.parameters.NumberedHeadingsParameterSupport.parseParameters(NumberedHeadingsParameterSupport.java:73)
	at nl.avisi.confluence.plugins.numberedheadings.macro.XHTMLNumberedHeadingsMacro.render(XHTMLNumberedHeadingsMacro.java:107)
	at nl.avisi.confluence.plugins.numberedheadings.macro.XHTMLNumberedHeadingsMacro.execute(XHTMLNumberedHeadingsMacro.java:77)
Environment
```

| **Application** | Confluence |
| --- | --- |
| Version | Any |
| **App Version** | Any |
| **Database Type** | Any |

  


## Cause

> ℹ️ This could be due to the wrong format of the number heading parameters.

## Solution

Please check the parameters properly and rectify them accordingly.

Below is an example

![image](media://8c5492fb-25e0-47bd-a3d2-bf7ef4d9ef18)


|  |  |
| --- | --- |
| The user entered the H6 heading format, which resulted in an error | [h1.decimal].[h2.decimal].[h3.decimal].[h4.decimal].[h5.decimal].[h6.decimall] |
| Correct H6 Heading format | [h1.decimal].[h2.decimal].[h3.decimal].[h4.decimal].[h5.decimal].[h6.decimal] |