Right, unfortunately, your Firefox instance is choosing to throw a security error. I am not sure how to account for the difference however one thing you can try is to change the app.jgz file into the uncompressed app file that is not minified. The reason is, Firefox should give you the specific line number generating the error. Right now it says line 8 because the code is minified and each file represents one line.
Please note, the jgz file extension will tell Apache to send a GZIP header so if the file is not already GZipped then it will cause a parsing error. So either, comment this line out in your web server config or gzip the file. You could also just edit home.js to use .js instead of .jgz for the “app” file.
I would do this debugging step myself but I do not receive the error begin with so it won’t help.