diff --git a/packages/@tests/smoke/web-cra-ts/src/App.tsx b/packages/@tests/smoke/web-cra-ts/src/App.tsx
index 5cb44e9b..9a54468e 100644
--- a/packages/@tests/smoke/web-cra-ts/src/App.tsx
+++ b/packages/@tests/smoke/web-cra-ts/src/App.tsx
@@ -13,13 +13,15 @@ function App() {
       })
       .catch((err) => {
         if (err instanceof Error) {
-          console.log({
-            name: err.name,
-            message: err.message,
-            stack: err.stack,
-          });
+          console.log(
+            JSON.stringify({
+              name: err.name,
+              message: err.message,
+              stack: err.stack,
+            }),
+          );
         } else {
-          console.log(err);
+          console.log(JSON.stringify(err));
         }
 
         setResult({ type: "failure", error: err.toString() });
diff --git a/packages/@tests/smoke/web/public/index.js b/packages/@tests/smoke/web/public/index.js
index eed52ea4..00175878 100644
--- a/packages/@tests/smoke/web/public/index.js
+++ b/packages/@tests/smoke/web/public/index.js
@@ -112,9 +112,9 @@ btn.addEventListener("click", () => {
     document.getElementById("res-placeholder").appendChild(inner);
   }).catch(err => {
     if (err instanceof Error) {
-      console.log({ name: err.name, message: err.message, stack: err.stack });
+      console.log(JSON.stringify({ name: err.name, message: err.message, stack: err.stack }));
       return;
     }
-    console.log(err);
+    console.log(JSON.stringify(err));
   });
 });