Api Clients Registration - Not Working

Situation
I am trying to register API clients in OpenEMR, but the registration process is not working as expected. When attempting to create or register a new API client, it does not complete successfully and the client is not being created.

OpenEMR Version
I’m using OpenEMR version: 8.0.0

Browser
I’m using:Chrome / Firefox / Edge

Operating System
I’m using: Windows 11

Search
Yes, I searched the forum for similar questions but did not find a solution related to this issue.

Logs
I checked the logs but did not see anything clearly related to the issue.

Paste relevant log entries here

I also enabled User Debugging from:
Administration → Globals → Logging → User Debugging Options → All

However, the API client registration is still not working.

If you have not gotten this working. How are you trying to register a client? Is it on the same network or are you external of the network that OpenEMR is deployed?