Please check your issue in this Q & A page before submitting new issue.
https://pqrs.org/osx/karabiner/faq.html.en
Please fill the following information, and describe your issue.
* OS X version:
* Karabiner version:
(You can confirm the version in "Misc & Uninstall" tab in Karabiner Preferences.)
* Your Mac hardware:
* Your keyboard hardware:
For example:
- OS X version: OS X 10.11.3
- Karabiner version: Karabiner 10.15.0
- Your Mac hardware: MacBook Pro
- Your keyboard hardware: Das Keyboard 4 Professional for Mac Mechanical Keyboard