diff --git a/lib/deps.js b/lib/deps.js
index d6807a33..eafc2cd6 100644
--- a/lib/deps.js
+++ b/lib/deps.js
@@ -78,9 +78,9 @@ for (const name of dependencies) {
     } else {
       lib = loadModule(name);
     }
-  } catch {
+  } catch (error) {
     if (npmpkg.includes(name) || !optional.includes(name)) {
-      notLoaded.add(name);
+      notLoaded.add(`- ${name}: ${error.stack}`);
     }
     continue;
   }
diff --git a/lib/worker.js b/lib/worker.js
index 744bb91b..46d43270 100644
--- a/lib/worker.js
+++ b/lib/worker.js
@@ -109,8 +109,8 @@ const init = async () => {
 
   if (notLoaded.size > 0) {
     if (threadId === 1) {
-      const libs = Array.from(notLoaded).join(', ');
-      console.error(`Can not load modules: ${libs}`);
+      const libs = Array.from(notLoaded).join('\n');
+      console.error(`Can not load modules:\n${libs}`);
     }
     process.exit(0);
   }