I think you should use List GUID in the 'List Name' field and then there might be also problem with the data in the 'Item' field which is not visible on the screenshots.
But I never understood what Power Automate wants from me in the 'Item' field so I prefer to create items in SP using HTTP request, maybe you could also try it that way.

_api/web/lists/GetByTitle('[ListName]')/Items
Accept application/json;odata=verbose
Content-Type application/json;odata=verbose
{
"__metadata": {
"type": "SP.Data.[ListName]ListItem"
},
"Title": "Item created by flow",
"column2": "column2 value..."
}