[fix] [issue] webnotes/erpnext#948 server messages clear from locals whenever exception is raised

core/page/data_import_tool/data_import_tool.py

@@ -384,7 +384,7 @@ def upload(rows = None, submit_after_import=None, ignore_encoding_errors=False,
 		
 		doclist = get_doclist(row_idx)
 		try:
-			webnotes.message_log = []
+			webnotes.local.message_log = []
 			if len(doclist) > 1:				
 				if overwrite and webnotes.conn.exists(doctype, doclist[0]["name"]):
 					bean = webnotes.bean(doctype, doclist[0]["name"])

webnotes/app.py

@@ -47,7 +47,7 @@ def application(request):
 
 	except HTTPException, e:
 		return e
-		
+	
 	return webnotes._response
 
 application = local_manager.make_middleware(application)