I migrated from my old host to a new one, they transferred all of my files.

When my server starts, I am getting the following error: 

DiscordChat - Failed to compile: DiscordChat.cs(1103,37): error CS0246: The type or namespace name `Snowflake' could not be found. Are you missing an assembly reference?

I have uninstalled / reinstalled but still get the same error.  Any ideas?

You have to update to the latest Discord Extension

Thank you!