I'm working through the above book By Mr. Lenz (which I think is excellent!) but I'm getting the message "MissingSourceFile(no such file to load -- sqlite3). I think I have installed the whole thing correctly (I've even gone back & installed the version the author was working on!) as I get to the command line OK & manage to display the initial Welcome page on Localhost3000.However, when I click on "About your applications environment" I get this message appearing " MissingSourceFile in Rails/infoController#properties"
Any ideas on resolving this would be greatly appreciated.
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