Shapefiles not Properly Responding

[brjwebb]

Hi, I have an html file that includes the 2 script source, "leaflet.shpfile.js" and "shp.js". I then did the:
var shape = new L.Shapefile(" url of a zip file hosted in Dropbox ");
shape.addTo(map);

For some reason when I load the html and I go to inspect. There are no error messages and it seems like everything loaded correctly. However, I don't see the shape file. I checked to see if the zip file was the issue however it loaded correctly when I uploaded it to your example.
I also tried by uploading via locally as just a .zip file. This did not work, instead it gave me a "XMLHttpRequest cannot load" CORS issue.
I don't know if this would affect the code but I am also pulling from different libraries such as Turf, leaflet, and some others.

Any thoughts?