I have the same problem.
“Invalid origin: http://localhost:8000”
I just want to retrieve the projects (base URL + /api/0/projects/) in my application and it doesn’t work from my web browser, I tried the same from postman and it works. But when I add Origin to the headers, it doesn’t seem to work except setting this to ‘null’.
Allowed Domains in my project settings is set to ‘*’.
Are there any other settings that need to be set or parameters/headers that we should add to the request?
I have seen a lot of closed items on this although a lot of people still seem to have these problems.