created ide session unknown error page following slack message

website/docs/faqs/Troubleshooting/ide-session-unknown-error.md

@@ -0,0 +1,19 @@
+---
+title: I'm receiving an 'Your IDE session experienced an unknown error and was terminated. Please contact support'.
+description: "Add a repository when seeing IDE unknown error"
+sidebar_label: 'Receiving unknown error in the IDE'
+
+---
+
+If you're seeing the following error when you launch the dbt Cloud IDE, it could be due to a few scenarios but, commonly, it indicates a missing repository:
+
+```shell
+
+Your IDE session experienced an unknown error and was terminated. Please contact support.
+
+```
+
+You can try to resolve this by adding a repository like a [managed repository](/docs/collaborate/git/managed-repository) or your preferred Git account. To add your Git account, navigate to **Project** > **Repository** and select your repository.
+
+
+If you're still running into this error, please contact the Support team at support@getdbt.com for help.