I just discovered that my crx-quickstart/bin folder is gone, so now I can't start my local instance. 

Thanks for your reply. I tried your suggestion and when I accessed it in Incognito mode, I got the same result. Any other suggestions? 

I'm trying to modify the dialog (content.xml) for our navigation Experience Fragment, but I made a change and reverted it, but get this error now:Cannot serve request to in /libs/granite/ui/components/coral/foundation/form/field/field.jspException:java.lang.NullPointerException at com.adobe.granite...