SharePoint Online CustomAction redirect error
I am working on an add-in for SharePoint Online. I have a problem with the redirect in the <CustomAction> element where the button subscribes to <CommandUIHandler Command = "Redirect.Command" CommandAction = "http://www.bing.com" /> On the redirect page I get an error like in the screenshot There is no additional information and I have no idea what is wrong. Maybe some of you have encountered such a problem?SharePoint Online - Add custom field to list settings page
Is it possible to add a link to an external page to configure app-specific settings for a list to a SharePoint List settings page? This is for SharePoint Online using a provider-hosted SharePoint Add-in. I tried using the directions provided here, which could achieve exactly what I'm looking for, but it doesn't work it seems: https://www.c-sharpcorner.com/article/add-custom-action-to-listlibrary-settings-in-sharepoint-using-visual-studio-fea2/#:~:text=Click%20Custom%20Action%20menu%20in,Click%20OK..
