diff --git a/src/class/Util.ts b/src/class/Util.ts
index cc540d4..1398782 100644
--- a/src/class/Util.ts
+++ b/src/class/Util.ts
@@ -31,7 +31,7 @@ export default class Util {
       const res = await ex(command);
       result = res.stderr || res.stdout;
     } catch (err) {
-      return `Error: Command failed: ${err.cmd}\n${err.stderr || err.stdout}`;
+      return Promise.reject(new Error(`Command failed: ${err.cmd}\n${err.stderr || err.stdout}`));
     }
     return result;
   }