Our team currently has a flow that has been working well mostly, but due to some errors in the Power Apps form, we changed the trigger of the flow from "Start flow whenever a list item is updated" to a Power Apps trigger, that starts whenever the form is submitted. This has eliminated the errors we were having, but seems to have messed up every HTTP request to Sharepoint we have in the flow (there are several). One of the error messages is pasted below (along with the step before error). The old copy of this flow that triggers with the list item change works perfectly with this exact set up.
Any ideas why the change causes this error?

