Errors During Packaging

Trying to finish up my project by packaging and I keep getting this yellow warning:
UATHelper: Packaging (Windows (64-bit)): LogLandscape: Warning: Shader FVelocityDS unknown by landscape thumbnail material, please add to either AllowedShaderTypes or ExcludedShaderTypes
On alot of my assets. It also seems to keep looping back to the message instead of finishing the build.

https://answers.unrealengine.com/questions/272095/programmain-error-an-item-with-the-same-key-has-al.html
Found the Solution here.