Deprecated function: json_decode(): Passing null to parameter #1 ($json) of type string is deprecated in Drupal\plabor_user\Controller\PlaborUserController->getCalendarHeatmapDataMarkupTable() (line 127 of modules/custom/plabor_user/src/Controller/PlaborUserController.php).
Warning: foreach() argument must be of type array|object, null given in Drupal\plabor_user\Controller\PlaborUserController->getCalendarHeatmapDataMarkupTable() (line 130 of modules/custom/plabor_user/src/Controller/PlaborUserController.php).
