Make sure you have closed the project that you are updating before following this guide.
First update Survival Game Kit in the Epic launcher and create a new Survival Game Kit project.
Then go to the new projects files in windows explorer and copy BuildPreview file found in the folder:
Then go to you projects files to the same location listed above and paste the BuildPreview and replace the current one you have.
Next go back to the new project you created and copy the BP_PlayerBuildingComponent file found in the folder:
Then go to the same folder in your project and paste the file replacing your current version of the file.