Type or namespace name PropertyName not found

Hello! Everything was going fine until I added the Wallet Connect and Moralis Setup. It immediately tells me the associate script cannot be loaded and to fix errors. The error I get is below and a screen shoot also. The error is in the TransactionCollection script. I used the Github Unity package new release dated 12 days ago.

Assets/MoralisWeb3ApiSdk/Moralis/Moralis.WebGL/Moralis.Web3Api.Core/Models/TransactionCollection.cs(40,17): error CS0246: The type or namespace name ‘PropertyName’ could not be found (are you missing a using directive or an assembly !

Transaction Collection Errors|690x416 reference?)

How can I fix this.