Error message

• Warning: Undefined variable $author_label_items in Drupal\cacom_productdb\Preprocessor\RecipePreprocessor->preprocess() (line 184 of modules/custom/cacom_productdb/src/Preprocessor/RecipePreprocessor.php).
• Warning: Undefined variable $author_image_items in Drupal\cacom_productdb\Preprocessor\RecipePreprocessor->preprocess() (line 187 of modules/custom/cacom_productdb/src/Preprocessor/RecipePreprocessor.php).
• Warning: Undefined variable $author_label_items in Drupal\cacom_productdb\Preprocessor\RecipePreprocessor->preprocess() (line 184 of modules/custom/cacom_productdb/src/Preprocessor/RecipePreprocessor.php).
• Warning: Undefined variable $author_image_items in Drupal\cacom_productdb\Preprocessor\RecipePreprocessor->preprocess() (line 187 of modules/custom/cacom_productdb/src/Preprocessor/RecipePreprocessor.php).