The cloning process was breaking on a Matrix field. I found this error in logs:
2020-09-26 21:09:49 [-][3][-][error][yii\base\ErrorException:8] yii\base\ErrorException: Undefined variable: fieldKey in /Users/brianhamby/Projects/thayer_website/vendor/verbb/field-manager/src/services/Service.php:162
Tracked it to a reference to an undefined variable "$fieldKey" (the variable is scoped inside a foreach loop that is inaccessible) and so I made a "$blockKey" variable to serve the purpose of the matrix block.
The cloning process was breaking on a Matrix field. I found this error in logs:
2020-09-26 21:09:49 [-][3][-][error][yii\base\ErrorException:8] yii\base\ErrorException: Undefined variable: fieldKey in /Users/brianhamby/Projects/thayer_website/vendor/verbb/field-manager/src/services/Service.php:162
Tracked it to a reference to an undefined variable "$fieldKey" (the variable is scoped inside a foreach loop that is inaccessible) and so I made a "$blockKey" variable to serve the purpose of the matrix block.