check your files permissions at your hosting server, if you at GoDaddy you have to renew the file permission policy every time you upload files into those directories via VS2017
during this week the new version 4.10 will be release so wait for it, edit just database, products, categories, don't edit the framework cause next version is in core
during this week the new version 4.10 will be release so wait for it, edit just database, products, categories, don't edit the framework cause next version is in core