Merge pull request #10 from guili618/my_dev

To make the error display more detailed using traceback.print_exc()

reverie/backend_server/reverie.py

@@ -26,6 +26,7 @@ import time
 import math
 import os
 import shutil
+import traceback
 
 from selenium import webdriver
 
@@ -591,7 +592,8 @@ class ReverieServer:
 
         print (ret_str)
 
-      except: 
+      except:
+        traceback.print_exc()
         print ("Error.")
         pass