I combined all of my .js files... Now my website is broken. How do I fix it? !

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In an attempt to get faster loading times, I tried to combine all of my .js files into one big ".combined.js" file. I went on to edit my source code to reflect the following (where it referenced the original .JS file):

{{ 'combined.js'| asset_url | script_tag }}

I found and replaced most of the references to the original .js files... but for the life of me can't find 4/24 references. Now the website is essentially broken... The home page slider wont work, multi language is unsupported.. etc etc.

I am running shopify if this helps

What I have tried:

I tried re-creating .js files, to get back the slider. Didn't work. I tried creating a new combined.js file. Didn't work. I went through the entire list of coding to replace every ".js"reference I used in the combined files. Didn't work, still cant find 4/24. Don't know how to fix this, and I'm a bit devastated.