My colleagues asked to figure out how to use rest api in Sharepoint(Project) on premise(not online! not sharepoint.com!)
Get requests work fine with NTLM auth via Postman.
Troubles started when i tried any POST, PUT requests.
I figured out that i need put X-RequestDigest header which i had got via POST request to {{ProjectServerUrl}}/_api/contextinfo

Now when i try POST,PUT,DELETE requests with X-RequestDigest header i get this error:
The security validation for this page is invalid. Click Back in your Web browser, refresh the page, and try your operation again.0x8102006d

I rummaged all stackoverflow to find any solutions. No results