diff --git a/lib/api.js b/lib/api.js
index bd5cbfd..628ec9e 100644
--- a/lib/api.js
+++ b/lib/api.js
@@ -63,8 +63,12 @@ const createZeroTrustListsAtOnce = async (items) => {
     listNumber++;
   }
 
-  await Promise.all(requests);
-  console.log(`Created ${totalListNumber} lists`);
+  try {
+    await Promise.all(requests);
+    console.log(`Created ${totalListNumber} lists`);
+  } catch (err) {
+    console.error(`Error occurred while creating lists - ${err.toString()}`);
+  }
 };
 
 /**
diff --git a/lib/helpers.js b/lib/helpers.js
index 69ea096..8fd511a 100644
--- a/lib/helpers.js
+++ b/lib/helpers.js
@@ -17,6 +17,10 @@ const request = async (url, options) => {
     ...options,
   });
 
+  if (!response.ok) {
+    throw new Error(`HTTP error! Status: ${response.status}`);
+  }
+
   return response.json();
 };