What is the meaning of the error message "Restclient" lacking a "BaseUrl"?

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The error message "Restclient" lacking a "BaseUrl" indicates that the REST client object is missing the base URL of the API endpoint that it is trying to access. A base URL is essential to establish a connection to the API server and specify the root directory for the resources. Without a base URL, the REST client cannot initiate requests or access resources from the API. To resolve this error, you need to provide a valid base URL to the REST client object.