Get an error when getting ConfigurationItemCategory fro AutoTask
Invalid type: expected Anteris\Autotask\API\ConfigurationItemCategories\ConfigurationItemCategoryEntity::displayColorRgb to be of type integer, instead got value null, which is NULL..
ConfigurationItemCategories does have RGB value in Autotask as seen in image. although it might be blue because thats a default and value is NULL.

Second error:
Public properties displayColorRGB not found on Anteris\Autotask\API\ConfigurationItemCategories\ConfigurationItemCategoryEntity
Resolved by changing line 13 in ConfigurationItemCategoryEntity
public int $displayColorRGB;