I have inherited an angular app with references to ionic as well. I changed one small thing on a page and then do ng build. No errors. But when I try to run it I get a blank white screen and in the console I get the following: Failed to load resource: the server responded with a status of 404 (Not Found) styles.js:1 Failed to load resource: the server responded with a status of 404 (Not Found) runtime.js:1 Failed to load resource: the server responded with a status of 404 (Not Found) main.js:1 Failed to load resource: the server responded with a status of 404 (Not Found) polyfills.js:1 Failed to load resource: the server responded with a status of 404 (Not Found) vendor.js In the scripts folder, I see all of those files but with either -es5 as part of the name or es2015 - ie. styles-es5.js and styles-es2015.js When I renamed all the files with -es5 and removed that part, it works fine (which makes sense). My questions are: Why are 2 of each type generated why is it generating with the extra characters, but then looking for the files without them? Which would be the accurate file to rename - the one with -es5 or the one with -es2015 As you can see, I am not very well versed in angular, so any and all help would be appreciated Continue reading...