Right, this particular data does not work “from the history” when loaded this way. You have to create or download the database using the other tools.
The output with just a few lines is an internal link to the SnpEff database created on the server. The SnpEff tool form should recognize and accept it as a database input.
@wm75 explains more about this is one of the prior posts in this topic (scroll up) and in a new duplicated Topic/post here SnpEff errors while trying to run the tool.