Looking at the console output it seems you are pointing to files that do not exist. Please point to correct locations of files and let me know when to check again. Thanks.
Failed to load resource: the server responded with a status of 404 ()
classifier.js:1 Failed to load resource: the server responded with a status of 404 ()
fiddle.jshell.net/weights/catsvsdogs/model.json:1 Failed to load resource: the server responded with a status of 404 ()
http.js:149 Uncaught (in promise) Error: Request to /weights/catsvsdogs/model.json failed with status code 404. Please verify this URL points to the model JSON of the model to load.
    at t.<anonymous> (http.js:149)
    at u (runtime.js:45)
    at Generator._invoke (runtime.js:274)
    at Generator.forEach.t.<computed> [as next] (runtime.js:97)
    at Wm (runtime.js:728)
    at o (runtime.js:728)
classifier.css:1 Failed to load resource: the server responded with a status of 404 ()