# Troubleshooting

Learn common troubleshooting techniques

- [How do I clear my browser's cache? Learn how to clear your browser's cache in Chrome and Microsoft Edge to improve Synthesia performance and fix common issues.](https://help.synthesia.io/en/articles/9859230-how-do-i-clear-my-browser-s-cache)
- [How do I fix the "Convert video to template" message? This message appears when your video includes API variables, which are only compatible with templates.](https://help.synthesia.io/en/articles/10113083-how-do-i-fix-the-convert-video-to-template-message)
- [How do I fix the "Something went wrong" error message? Learn how to fix the "Something went wrong" error in Synthesia with a quick browser cache and refresh fix.](https://help.synthesia.io/en/articles/10113079-how-do-i-fix-the-something-went-wrong-error-message)
- [Why have I not received my free demo video? Learn why a free demo video may not arrive and what to do if it was rejected during content moderation.](https://help.synthesia.io/en/articles/9483461-why-have-i-not-received-my-free-demo-video)
- [Why can't I use a certain voice in Synthesia? Find out which Synthesia voices have been removed and learn how to manually replace a voice in your video.](https://help.synthesia.io/en/articles/9805246-why-can-t-i-use-a-certain-voice-in-synthesia)
- [How do I troubleshoot browser issues in Synthesia? Learn how to use the Synthesia browser clean-up tool to fix common issues, and what to do if the reset does not resolve your problem.](https://help.synthesia.io/en/articles/11163958-how-do-i-troubleshoot-browser-issues-in-synthesia)