This looks like a problem loading the jquery file; depending on how you are loading it (locally or from CDN) will dictate how you change the CSP. I just posted an answer to a similar question, but basically, unless you are serving the jquery locally on your node dev server, you will have to add the jquery domain to your scriptSrc to load it.
Check the network part of the dev console in your browser to see if jquery is not loading or post a link to the project on repl.it if this doesn’t help.
I’m good at being wrong on CSP stuff, though; I’ve had lots of practice.