diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 3b0da3d..f0dfacc 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -248,7 +248,7 @@
   <component name="PropertiesComponent">
     <property name="WebServerToolWindowFactoryState" value="false" />
     <property name="aspect.path.notification.shown" value="true" />
-    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1588415457756" />
+    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1588415532129" />
     <property name="go.gopath.indexing.explicitly.defined" value="true" />
     <property name="nodejs_interpreter_path.stuck_in_default_project" value="undefined stuck path" />
     <property name="nodejs_npm_path_reset_for_default_project" value="true" />
diff --git a/serve.py b/serve.py
index 41f09b3..e0d4283 100644
--- a/serve.py
+++ b/serve.py
@@ -142,7 +142,7 @@ def predict(job, seq):
 		'value': 0,
 	}
 
-	file = './data/' + job + '.' + random.randint(1000, 9999) + '.csv'
+	file = './data/' + job + '.' + str(random.randint(1000, 9999)) + '.csv'
 	df = pd.read_csv('./data/' + job + '.csv', usecols=['seq', 'value'])
 	df = df.tail(batch_size * 2 - 1)
 	df = df.append(data, ignore_index=True)