# Troubleshooting - [Basic Troubleshooting](https://docs.datarhei.com/restreamer/knowledge-base/troubleshooting/basic-troubleshooting.md): Most errors have only a tiny cause and are easy to fix. What you have to check first is described in this document in 3 steps. - [Encoding compatibility list](https://docs.datarhei.com/restreamer/knowledge-base/troubleshooting/encoding-compatibility-list.md): These encoders work well with the Restreamer. - [Understand different error messages?](https://docs.datarhei.com/restreamer/knowledge-base/troubleshooting/understand-different-error-messages.md) - [Why do I see ENV and cannot select anything?](https://docs.datarhei.com/restreamer/knowledge-base/troubleshooting/why-do-i-see-env-and-cannot-select-anything.md): In the user interface, there are always settings marked with ENV and locked for selection. - [No video](https://docs.datarhei.com/restreamer/knowledge-base/troubleshooting/no-video.md): The errors with the video source can be multilayered. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.datarhei.com/restreamer/knowledge-base/troubleshooting.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.