diff --git a/.travis.yml b/.travis.yml
index e88886139b..b3a86939e5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,7 +15,7 @@ addons:
 install:
   - export DISPLAY=':99.0'
   - Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
-  - npm install
+  - rm -rf node_modules npm install
 
 script:
   - npm run ci && cat ./coverage/lcov.info | rm -rf ./coverage
diff --git a/stories/Interaction/component/lasso-select.tsx b/stories/Interaction/component/lasso-select.tsx
index 7a34254918..86d606e870 100644
--- a/stories/Interaction/component/lasso-select.tsx
+++ b/stories/Interaction/component/lasso-select.tsx
@@ -1,7 +1,6 @@
 import React, { useEffect } from 'react';
 import G6 from '../../../src';
 import { IGraph } from '../../../src/interface/graph';
-import { groupCollapsed } from 'console';
 
 let graph: IGraph = null;