清除缓存后的Javascript参考404

UI newbie here. A project is using nvd3, and to test a chart/javascript, the cache had to be cleared. Now, one of the script references to the nvd3 chart libraries is registering a 404 error and the graph is displaying null even though source code shows the proper data. Navigating the links via the source code seems to work. There's also a "Browser Link: Failed to send message to browser link server: Error: SignalR: Connection must be started before data can be sent. Call .start() before .send()" error now, but I changed the Chrome settings to use a proxy server for LAN and bypass proxy server for local address, which fixed this error when it popped up earlier. I looked into rewriting, but I don't think that's happening, and I don't see any reason why it would now and not before. Also, I tried loading the libraries one after the other, like below, in case some dependency was locking up, but that also generated a 404 error on the closing script tag.UI newbie here. A project is using nvd3, and to