fix missing worker index in cli mode

Author: kobenguyent

lib/container.js

@@ -89,7 +89,7 @@ class Container {
           container.support.I = mod
         }
       } catch (e) {
-        throw new Error(`Could not include object I: ${e.message}`)
+        throw e
       }
     } else {
       // Create default actor - this sets up the callback in asyncHelperPromise
@@ -847,7 +847,9 @@ async function loadSupportObject(modulePath, supportObjectName) {
 
     throw new Error(`Support object "${supportObjectName}" should be an object, class, or function, but got ${typeof actualObj}`)
   } catch (err) {
-    throw new Error(`Could not include object ${supportObjectName} from module '${modulePath}'\n${err.message}\n${err.stack}`)
+    const newErr = new Error(`Could not include object ${supportObjectName} from module '${modulePath}': ${err.message}`)
+    newErr.stack = err.stack
+    throw newErr
   }
 }