Merge pull request #444 from staff0rd/nullcheck_onError

Log error on undefined stack

Author: wzrdtales

api.js

@@ -136,7 +136,7 @@ function dbmigrate(plugins, isModule, options, callback) {
 function registerEvents() {
 
   process.on('uncaughtException', function(err) {
-    log.error(err.stack);
+    log.error(err.stack || err);
     process.exit(1);
   });