Jerry Rains - Thanks for the question and using MS Q&A platform.
The "Client Error Request failed with status code 500" error in Microsoft Purview indicates that there was an internal server error while processing your request. This error message indicates that there is an issue with the Purview service itself, rather than your specific request.
There could be a variety of reasons why this error occurs, such as temporary service disruption, insufficient resources, or a misconfiguration. The best course of action is to check the Azure Status page to see if there are any known issues or outages with the Purview service. You can also try to refresh the page or wait a few minutes and try again.
If the issue persists, you can share the screenshot of the error message which you are experiencing with the search results.