Complete the Migration
Update OAUTH applications as follows:
1. Log on to Developer Portal and go to the Applications page.
2. Click the edit icon next to an OAUTH application and go to the Edit page.
3. In the Associated Callbacks field, delete the callback URL.
4. In the Callbacks field, type the URL https://host_name:https_port/portal/rest/v1/oauth/callback and click Add.
5. Click Save.
6. Repeat for every OAUTH application.