check for empty string

src/efibootmgr.service.ts

@@ -58,7 +58,9 @@ export class EfiBootMgrService {
 			};
 		}
 
-		return outputValues.entries.map((v) => {
+		return outputValues.entries
+			.filter((e) => ![e].join(""))
+			.map((v) => {
 				logger.debug(`Processing boot entry: ${v}`);
 
 				const [bootStr, labelStr] = v.split("* ");