I just generated a new web part using the Yeoman generator for SPFx 1.4.1, and am debugging it in the hosted workbench. We are using SP2016, On Prem.

I am seeing console logging that looks like this:

Failed to load resource: the server responded with a status of 403 (Forbidden) [http://our-onprem-sharepoint.com/_layouts/15/WsaUpload.ashx]

Any suggestions on

  • the source of these requests? (I didn't write them...)
  • how I can make them stop?
  • You need to use SPFx 1.1 for SP 2016 OnPrem, SPFx 1.4.1 is supported only for SP Online and SP 2019 – Gautam Sheth Jun 14 '19 at 19:24
  • @GautamSheth That is simply not true. See the release notes. – stackleit Jun 14 '19 at 21:03

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