I have encountered a problem with my React App's single sign-on (SSO) on Quicklaunch. After logging in on Quicklaunch and then it redirects to my React App I get this response.
Cannot POST /sso/login
this /sso/login is the page on the React App.
I asked for the support of Quicklaunch and they said they would return some data from the active directory like the username.
How can I check the data from Quicklaunch to check if the user exists on my React App? I feel I have missed a step.