Fatal error: Uncaught Error: Interface "Concrete\Core\Health\Grade\GradeInterface" not found in /home/steele15/public_html/voice/concrete/src/Health/Grade/AbstractGrade.php:4
Stack trace:
#0 {main}
thrown in /home/steele15/public_html/voice/concrete/src/Health/Grade/AbstractGrade.php on line 4