Applying fix for empty CS Endpoint to FL

federated/flApiClient.js

@@ -38,7 +38,7 @@ class FLApiClient extends EventEmitter {
         super();
         this.#jobId = jobId;
         this.#logger = new FederatedLogger();
-        this.#baseUrl = `https://${process.env.CENTRALSERVICE_ADDRESS}:${process.env.CENTRALSERVICE_PORT}/${process.env.CENTRALSERVICE_ENDPOINT}/api/`;
+        this.#baseUrl = `https://${process.env.CENTRALSERVICE_ADDRESS}:${process.env.CENTRALSERVICE_PORT}/${process.env.CENTRALSERVICE_ENDPOINT}${process.env.CENTRALSERVICE_ENDPOINT ?? '/'}api/`;
         this.#lastEvent = 0;
         //Status codes that are considered as successful by the client
         this.#successStatusCodes = [200, 201, 204];