# If CotEditor on Mac quits unexpectedly

If you get frequent unexpected quits of CotEditor under certain circumstances, send a crash log on the following page:

- Issues coteditor/CotEditor -github

When you send a crash log, don’t forget to include the following information:

- The operation you performed just before the unexpected quit.
- Your environment information such as the version of macOS, the version of CotEditor, your machine model, and so on.

You can see a crash log by selecting the Report button in the dialog which appears on the crash.