Blendables no longer exists on node

Hello there,
I am trying to open my project with HAL Archiviz v.1 with UE4 4.18 but I have a problem with FirstCharacterPerson, the error, has you can see in the image attached, is:
Blendables no longer exists on node Make PostProcessSettings. Please refresh node or break links to remove pin.
How I can fix it?
Thanks in advance.