Error in deps file causes useless exception on import

[cursive-ide]

Reported by @wilkerlucio in Slack:

I was getting a strange error when trying to load a project from deps:

Error resolving /Users/wilker.lucio/Development/third-part/fulcro-garden-css: java.lang.String cannot be cast to java.io.File

There was a syntax error in my user deps.edn, when I tried to run another command on the terminal for another reason I got:

Error building classpath. Error reading edn. Unmatched delimiter: } (/Users/wilker.lucio/.clojure/deps.edn)

It would be nice if Cursive could also use that message. This was caused by a stray }.