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title = "Troubleshooting"
description = "Guide to troubleshooting Grafana problems"
keywords = ["grafana", "troubleshooting", "documentation", "guide"]
type = "docs"
[menu.docs]
parent = "admin"
weight = 8
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# Troubleshooting
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## Visualization & Query issues
{{< imgbox max-width = "40%" img = "/img/docs/v45/query_inspector.png" caption = "Query Inspector" > }}
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The most common problems are related to the query & response from you data source. Even if it looks
like a bug or visualization issue in Grafana it is 99% of time a problem with the data source query or
the data source response.
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To check this you should use Query Inspector (new in Grafana v4.5). The query Inspector shows query requests and responses.
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For more on the query inspector read [this guide here ](https://community.grafana.com/t/using-grafanas-query-inspector-to-troubleshoot-issues/2630 ). For
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older versions of Grafana read the [how troubleshoot metric query issue ](https://community.grafana.com/t/how-to-troubleshoot-metric-query-issues/50/2 ) article.
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## Logging
If you encounter an error or problem it is a good idea to check the grafana server log. Usually
located at `/var/log/grafana/grafana.log` on unix systems or in `<grafana_install_dir>/data/log` on
other platforms & manual installs.
You can enable more logging by changing log level in you grafana configuration file.
## FAQ
Checkout the [FAQ ](https://community.grafana.com/c/howto/faq ) section on our community page for frequently
asked questions.
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