BTT Play/Pause and Next Song/Previous Song buttons not working

Describe the bug
When pressed, the play/pause buttons and the next song/previous song buttons do not work.

Affected input device (e.g. MacBook Trackpad, Magic Mouse/Trackpad, Touch Bar, etc.):
Touch Bar

Screenshots

Device information:

  • Type of Mac: MacBook Pro 2017 Touch Bar
  • macOS version: 10.13.6 High Sierra
  • BetterTouchTool version: 2.638 (947)

Additional information (e.g. StackTraces, related issues, screenshots, workarounds, etc.):

Note: Before bug reporting, please make sure you have the latest version of BetterTouchTool and that you have already tried to restart your system :-). If you encounter a crash, please attach a crash log from the macOS Console.app from the "User Diagnostic Reports" section.