added guard statement to prevent accidentally sending none file to pa…

…rser

Sources/SwiftkubeClient/Client/KubernetesClient.swift

@@ -121,7 +121,12 @@ public class KubernetesClient {
 		logger: Logger? = nil
 	) {
 		let logger = logger ?? KubernetesClient.loggingDisabled
-
+
+		guard fromURL.isFileURL else {
+			logger.debug("URL must point to a file")
+			return nil
+		}
+
 		guard
 			let config = try? LocalFileConfigLoader(fromURL: fromURL).load(logger: logger)
 		else {