> For the complete documentation index, see [llms.txt](https://knowledge.themeware.design/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.themeware.design/knowledge-base/tutorials/debugging/narrowing-down-errors.md).

# Narrowing down errors

Before reporting an issue, you can easily check yourself whether a customization, a specific extension (plugin or app) or the theme is responsible for the problem.

## Check whether the problem is caused by the theme

To check whether the error or problem is actually caused by the theme, please have a look at the following article:

{% content-ref url="/pages/S1gf9PtVGHLWPtbg2IGn" %}
[Examining Shopware default theme](/knowledge-base/tutorials/solving-errors/examining-shopware-default-theme.md)
{% endcontent-ref %}

## Check whether a customization causes the error

To check whether the error or problem is caused by a customization, please have a look at the following article:

{% content-ref url="/pages/I3BNscFTbpV78laRF1au" %}
[Examining individual customizations](/knowledge-base/tutorials/solving-errors/examining-individual-customizations.md)
{% endcontent-ref %}

## Check whether an extension is causing the error

To check whether the error or problem is caused by a specific extension (plugin or app), please have a look at the following article:

{% content-ref url="/pages/VztO0qu6lkfegXAOqrRm" %}
[Examining extensions or plugins](/knowledge-base/tutorials/solving-errors/examining-extensions-or-plugins.md)
{% endcontent-ref %}

{% hint style="info" %}
**Note**: The article is part of our guided troubleshooting assistant and explains a specific step in this process.

To make sure to follow the steps in the right order, please use the troubleshooting assistant.
{% endhint %}