WIP: OAuth authn

pages/api/auth/[...nextauth].ts

@@ -8,7 +8,7 @@ const issuer = 'https://keycloak.sso.gwdg.de/auth/realms/academiccloud'
 async function refreshAccessToken (token: any) {
   try {
     const url =
-      issuer + '/protocol/openid-connect/token?' +
+      issuer + '/protocol/openid-connect?' +
       new URLSearchParams({
         client_id: clientId,
         client_secret: clientSecret,