fix: 首页img路径修改

src/containers/App/index.js

-import React , {useEffect} from 'react';
+import React, { useEffect } from 'react';
 
 import { Helmet } from 'react-helmet';
 import { connect } from 'react-redux';
@@ -16,20 +16,28 @@ const config = require('../../../config/config');
 
 const App = props => {
   useEffect(() => {
-    event.emit('loading' ,  props.loading);
-  }, [props.loading])
+    event.emit('loading', props.loading);
+  }, [props.loading]);
 
   const metaSecurity = /https/.test(window.location.protocol) ? (
-    <meta httpEquiv='Content-Security-Policy' content='upgrade-insecure-requests' />
+    <meta httpEquiv="Content-Security-Policy" content="upgrade-insecure-requests" />
   ) : null;
   return (
     <>
       <Helmet title={`${(props.global && props.global.title) || defaultSetting.title}`}>
         <title>{`${(props.global && props.global.title) || defaultSetting.title}`}</title>
-        <link rel='shortcut icon'
-              href={`${window.location.origin}/web4/${props.global && props.global.shortcutIcon}`} />
+        {/* <link rel='shortcut icon'
+              href={`${window.location.origin}/web4/${props.global && props.global.shortcutIcon}`} /> */}
+        <link
+          rel="shortcut icon"
+          href={
+            props.global && props.global.shortcutIcon
+              ? `${window.location.origin}/web4/${props.global.shortcutIcon}`
+              : defaultSetting.logo
+          }
+        />
         {metaSecurity}
-        <meta name='description' content={`${(props.global && props.global.title) || defaultSetting.title}`} />
+        <meta name="description" content={`${(props.global && props.global.title) || defaultSetting.title}`} />
       </Helmet>
       <Router basename={config.base || pkg.name.toLocaleLowerCase() || ''}>
         <Switch>
@@ -45,7 +53,7 @@ const App = props => {
       </Router>
     </>
   );
-}
+};
 
 const mapStateToProps = state => ({
   global: state.getIn(['global', 'globalConfig']),