fix (invoke-handler) invalid error thrown when model not found

Author: vengrov

lib/server-code/runners/tasks/executor.js

@@ -96,7 +96,8 @@ executor.execute = function(task, runnerOpts, model) {
     .then((taskExecutor) => taskExecutor(task, runnerOpts, model))
     .then(result => result && invocationResult(null, result))
     .catch((err) => {
-      logger.error(err);
+      logger.error(`Error: ${err.message || err}`);
+
       return invocationResult(err);
     });
 };

lib/server-code/runners/tasks/invoke-handler.js

@@ -111,7 +111,7 @@ function buildModel(task, runnerOpts) {
   const modelDescriptorPath = `${codePath}/model.json`;
 
   if (!fs.existsSync(modelDescriptorPath)) {
-    logger.error(`Application Model descriptor not found (${modelDescriptorPath})`);
+    throw new Error(`Application Model descriptor not found [${modelDescriptorPath}]`);
   }
 
   const modelDescriptor = require(modelDescriptorPath);