502 error upload csv file to web api
I have an Angular5 user interface with a file upload function. The user clicks a button and selects a file and the file is sent to the web api (asp.NET Core) method for processing.
angular5
Update to Angular 5
How to update to Angular 5?
This is from my package.json:
How to enable Access-Control-Allow-Origin for angular 5/nodejs?
Read many ways for including of ‘Access-Control-Allow-Origin’ and none worked for me.
Upgrade from Angular 4 to 5: “NodeInvocationException: No provider for PlatformRef!”
I’ve upgraded an app from Angular 4.2 to 5, but got this error:
unhandled exception occurred while processing the request, more specifically: