diff --git a/simulation/PythonLauncher.class b/simulation/PythonLauncher.class
index c2d79a3..f2e9ffa 100644
Binary files a/simulation/PythonLauncher.class and b/simulation/PythonLauncher.class differ
diff --git a/simulation/SimulationLauncher.class b/simulation/SimulationLauncher.class
index 7a3d55e..d37c01a 100644
Binary files a/simulation/SimulationLauncher.class and b/simulation/SimulationLauncher.class differ
diff --git a/simulation/chromium/userData/Default/AutofillStrikeDatabase/LOG b/simulation/chromium/userData/Default/AutofillStrikeDatabase/LOG
index 706bb44..b1cf544 100644
--- a/simulation/chromium/userData/Default/AutofillStrikeDatabase/LOG
+++ b/simulation/chromium/userData/Default/AutofillStrikeDatabase/LOG
@@ -1,3 +1,3 @@
-2021/04/03-14:43:11.987 3b68 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\AutofillStrikeDatabase/MANIFEST-000001
-2021/04/03-14:43:11.987 3b68 Recovering log #3
-2021/04/03-14:43:11.988 3b68 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\AutofillStrikeDatabase/000003.log 
+2021/04/07-16:45:52.509 d24 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\AutofillStrikeDatabase/MANIFEST-000001
+2021/04/07-16:45:52.510 d24 Recovering log #3
+2021/04/07-16:45:52.511 d24 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\AutofillStrikeDatabase/000003.log 
diff --git a/simulation/chromium/userData/Default/BudgetDatabase/LOG b/simulation/chromium/userData/Default/BudgetDatabase/LOG
index b415550..9340108 100644
--- a/simulation/chromium/userData/Default/BudgetDatabase/LOG
+++ b/simulation/chromium/userData/Default/BudgetDatabase/LOG
@@ -1,3 +1,3 @@
-2021/04/03-14:43:11.983 3978 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\BudgetDatabase/MANIFEST-000001
-2021/04/03-14:43:11.984 3978 Recovering log #3
-2021/04/03-14:43:11.984 3978 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\BudgetDatabase/000003.log 
+2021/04/07-16:45:52.508 1228 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\BudgetDatabase/MANIFEST-000001
+2021/04/07-16:45:52.509 1228 Recovering log #3
+2021/04/07-16:45:52.510 1228 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\BudgetDatabase/000003.log 
diff --git a/simulation/chromium/userData/Default/Cache/data_0 b/simulation/chromium/userData/Default/Cache/data_0
index ce6bb90..89b1ad8 100644
Binary files a/simulation/chromium/userData/Default/Cache/data_0 and b/simulation/chromium/userData/Default/Cache/data_0 differ
diff --git a/simulation/chromium/userData/Default/Cache/data_1 b/simulation/chromium/userData/Default/Cache/data_1
index dabca34..fa527c9 100644
Binary files a/simulation/chromium/userData/Default/Cache/data_1 and b/simulation/chromium/userData/Default/Cache/data_1 differ
diff --git a/simulation/chromium/userData/Default/Cache/data_2 b/simulation/chromium/userData/Default/Cache/data_2
index 824e0a8..be5acb7 100644
Binary files a/simulation/chromium/userData/Default/Cache/data_2 and b/simulation/chromium/userData/Default/Cache/data_2 differ
diff --git a/simulation/chromium/userData/Default/Cache/data_3 b/simulation/chromium/userData/Default/Cache/data_3
index 264fec6..0305db3 100644
Binary files a/simulation/chromium/userData/Default/Cache/data_3 and b/simulation/chromium/userData/Default/Cache/data_3 differ
diff --git a/simulation/chromium/userData/Default/Code Cache/js/index-dir/the-real-index b/simulation/chromium/userData/Default/Code Cache/js/index-dir/the-real-index
index c2b55c7..5424fd1 100644
Binary files a/simulation/chromium/userData/Default/Code Cache/js/index-dir/the-real-index and b/simulation/chromium/userData/Default/Code Cache/js/index-dir/the-real-index differ
diff --git a/simulation/chromium/userData/Default/Extension State/LOG b/simulation/chromium/userData/Default/Extension State/LOG
index fd98717..b5de222 100644
--- a/simulation/chromium/userData/Default/Extension State/LOG	
+++ b/simulation/chromium/userData/Default/Extension State/LOG	
@@ -1,3 +1,3 @@
-2021/04/03-14:43:15.078 7f4 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\Extension State/MANIFEST-000001
-2021/04/03-14:43:15.079 7f4 Recovering log #3
-2021/04/03-14:43:15.079 7f4 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\Extension State/000003.log 
+2021/04/07-16:45:54.620 4f44 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\Extension State/MANIFEST-000001
+2021/04/07-16:45:54.620 4f44 Recovering log #3
+2021/04/07-16:45:54.621 4f44 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\Extension State/000003.log 
diff --git a/simulation/chromium/userData/Default/Favicons b/simulation/chromium/userData/Default/Favicons
index 75f6002..6e4b4e7 100644
Binary files a/simulation/chromium/userData/Default/Favicons and b/simulation/chromium/userData/Default/Favicons differ
diff --git a/simulation/chromium/userData/Default/Favicons-journal b/simulation/chromium/userData/Default/Favicons-journal
index cc89e18..a70bcee 100644
Binary files a/simulation/chromium/userData/Default/Favicons-journal and b/simulation/chromium/userData/Default/Favicons-journal differ
diff --git a/simulation/chromium/userData/Default/Feature Engagement Tracker/AvailabilityDB/000003.log b/simulation/chromium/userData/Default/Feature Engagement Tracker/AvailabilityDB/000003.log
index 745ce01..04006d0 100644
Binary files a/simulation/chromium/userData/Default/Feature Engagement Tracker/AvailabilityDB/000003.log and b/simulation/chromium/userData/Default/Feature Engagement Tracker/AvailabilityDB/000003.log differ
diff --git a/simulation/chromium/userData/Default/Feature Engagement Tracker/AvailabilityDB/LOG b/simulation/chromium/userData/Default/Feature Engagement Tracker/AvailabilityDB/LOG
index b33a255..3c385d7 100644
--- a/simulation/chromium/userData/Default/Feature Engagement Tracker/AvailabilityDB/LOG	
+++ b/simulation/chromium/userData/Default/Feature Engagement Tracker/AvailabilityDB/LOG	
@@ -1,3 +1,3 @@
-2021/04/03-14:43:11.956 3b68 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\Feature Engagement Tracker\AvailabilityDB/MANIFEST-000001
-2021/04/03-14:43:11.957 3b68 Recovering log #3
-2021/04/03-14:43:11.957 3b68 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\Feature Engagement Tracker\AvailabilityDB/000003.log 
+2021/04/07-16:45:52.486 adc Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\Feature Engagement Tracker\AvailabilityDB/MANIFEST-000001
+2021/04/07-16:45:52.487 adc Recovering log #3
+2021/04/07-16:45:52.488 adc Reusing old log E:\GRP\project\simulation\chromium\userData\Default\Feature Engagement Tracker\AvailabilityDB/000003.log 
diff --git a/simulation/chromium/userData/Default/Feature Engagement Tracker/EventDB/LOG b/simulation/chromium/userData/Default/Feature Engagement Tracker/EventDB/LOG
index 242a052..408f847 100644
--- a/simulation/chromium/userData/Default/Feature Engagement Tracker/EventDB/LOG	
+++ b/simulation/chromium/userData/Default/Feature Engagement Tracker/EventDB/LOG	
@@ -1,3 +1,3 @@
-2021/04/03-14:43:11.945 3b68 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\Feature Engagement Tracker\EventDB/MANIFEST-000001
-2021/04/03-14:43:11.946 3b68 Recovering log #3
-2021/04/03-14:43:11.947 3b68 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\Feature Engagement Tracker\EventDB/000003.log 
+2021/04/07-16:45:52.472 adc Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\Feature Engagement Tracker\EventDB/MANIFEST-000001
+2021/04/07-16:45:52.473 adc Recovering log #3
+2021/04/07-16:45:52.474 adc Reusing old log E:\GRP\project\simulation\chromium\userData\Default\Feature Engagement Tracker\EventDB/000003.log 
diff --git a/simulation/chromium/userData/Default/History b/simulation/chromium/userData/Default/History
index 1d1261a..17f811a 100644
Binary files a/simulation/chromium/userData/Default/History and b/simulation/chromium/userData/Default/History differ
diff --git a/simulation/chromium/userData/Default/History-journal b/simulation/chromium/userData/Default/History-journal
index f3842ed..46ad853 100644
Binary files a/simulation/chromium/userData/Default/History-journal and b/simulation/chromium/userData/Default/History-journal differ
diff --git a/simulation/chromium/userData/Default/Login Data b/simulation/chromium/userData/Default/Login Data
index 6211e68..06a2614 100644
Binary files a/simulation/chromium/userData/Default/Login Data and b/simulation/chromium/userData/Default/Login Data differ
diff --git a/simulation/chromium/userData/Default/Site Characteristics Database/000003.log b/simulation/chromium/userData/Default/Site Characteristics Database/000003.log
index 46580fb..845f4a1 100644
Binary files a/simulation/chromium/userData/Default/Site Characteristics Database/000003.log and b/simulation/chromium/userData/Default/Site Characteristics Database/000003.log differ
diff --git a/simulation/chromium/userData/Default/Site Characteristics Database/LOG b/simulation/chromium/userData/Default/Site Characteristics Database/LOG
index 7f8326c..c1d76e2 100644
--- a/simulation/chromium/userData/Default/Site Characteristics Database/LOG	
+++ b/simulation/chromium/userData/Default/Site Characteristics Database/LOG	
@@ -1,3 +1,3 @@
-2021/04/03-14:43:11.916 5088 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\Site Characteristics Database/MANIFEST-000001
-2021/04/03-14:43:11.917 5088 Recovering log #3
-2021/04/03-14:43:11.918 5088 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\Site Characteristics Database/000003.log 
+2021/04/07-16:45:52.421 11e4 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\Site Characteristics Database/MANIFEST-000001
+2021/04/07-16:45:52.422 11e4 Recovering log #3
+2021/04/07-16:45:52.422 11e4 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\Site Characteristics Database/000003.log 
diff --git a/simulation/chromium/userData/Default/Sync Data/LevelDB/LOG b/simulation/chromium/userData/Default/Sync Data/LevelDB/LOG
index f7b77c3..b1ecb48 100644
--- a/simulation/chromium/userData/Default/Sync Data/LevelDB/LOG	
+++ b/simulation/chromium/userData/Default/Sync Data/LevelDB/LOG	
@@ -1,3 +1,3 @@
-2021/04/03-14:43:11.936 4e0c Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\Sync Data\LevelDB/MANIFEST-000001
-2021/04/03-14:43:11.936 4e0c Recovering log #3
-2021/04/03-14:43:11.937 4e0c Reusing old log E:\GRP\project\simulation\chromium\userData\Default\Sync Data\LevelDB/000003.log 
+2021/04/07-16:45:52.445 386c Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\Sync Data\LevelDB/MANIFEST-000001
+2021/04/07-16:45:52.446 386c Recovering log #3
+2021/04/07-16:45:52.447 386c Reusing old log E:\GRP\project\simulation\chromium\userData\Default\Sync Data\LevelDB/000003.log 
diff --git a/simulation/chromium/userData/Default/Visited Links b/simulation/chromium/userData/Default/Visited Links
index 4524799..2109ba6 100644
Binary files a/simulation/chromium/userData/Default/Visited Links and b/simulation/chromium/userData/Default/Visited Links differ
diff --git a/simulation/chromium/userData/Default/data_reduction_proxy_leveldb/CURRENT b/simulation/chromium/userData/Default/data_reduction_proxy_leveldb/CURRENT
index 23b73d9..5d746f2 100644
--- a/simulation/chromium/userData/Default/data_reduction_proxy_leveldb/CURRENT
+++ b/simulation/chromium/userData/Default/data_reduction_proxy_leveldb/CURRENT
@@ -1 +1 @@
-MANIFEST-000014
+MANIFEST-000064
diff --git a/simulation/chromium/userData/Default/data_reduction_proxy_leveldb/LOG b/simulation/chromium/userData/Default/data_reduction_proxy_leveldb/LOG
index 6b13095..5cbd838 100644
--- a/simulation/chromium/userData/Default/data_reduction_proxy_leveldb/LOG
+++ b/simulation/chromium/userData/Default/data_reduction_proxy_leveldb/LOG
@@ -1,3 +1,3 @@
-2021/04/03-14:43:11.930 3978 Recovering log #13
-2021/04/03-14:43:11.951 3978 Delete type=0 #13
-2021/04/03-14:43:11.951 3978 Delete type=3 #12
+2021/04/07-16:45:52.471 14e8 Recovering log #63
+2021/04/07-16:45:52.503 14e8 Delete type=0 #63
+2021/04/07-16:45:52.504 14e8 Delete type=3 #62
diff --git a/simulation/chromium/userData/Default/shared_proto_db/metadata/LOG b/simulation/chromium/userData/Default/shared_proto_db/metadata/LOG
index 38df572..e0338fa 100644
--- a/simulation/chromium/userData/Default/shared_proto_db/metadata/LOG
+++ b/simulation/chromium/userData/Default/shared_proto_db/metadata/LOG
@@ -1,3 +1,3 @@
-2021/04/03-14:43:12.105 3978 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\shared_proto_db\metadata/MANIFEST-000001
-2021/04/03-14:43:12.106 3978 Recovering log #3
-2021/04/03-14:43:12.107 3978 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\shared_proto_db\metadata/000003.log 
+2021/04/07-16:45:52.587 1228 Reusing MANIFEST E:\GRP\project\simulation\chromium\userData\Default\shared_proto_db\metadata/MANIFEST-000001
+2021/04/07-16:45:52.612 1228 Recovering log #3
+2021/04/07-16:45:52.613 1228 Reusing old log E:\GRP\project\simulation\chromium\userData\Default\shared_proto_db\metadata/000003.log 
diff --git a/simulation/chromium/userData/GrShaderCache/GPUCache/data_1 b/simulation/chromium/userData/GrShaderCache/GPUCache/data_1
index 035d06d..44cb48a 100644
Binary files a/simulation/chromium/userData/GrShaderCache/GPUCache/data_1 and b/simulation/chromium/userData/GrShaderCache/GPUCache/data_1 differ
diff --git a/simulation/chromium/userData/ShaderCache/GPUCache/data_1 b/simulation/chromium/userData/ShaderCache/GPUCache/data_1
index 9adcb0e..2504ef2 100644
Binary files a/simulation/chromium/userData/ShaderCache/GPUCache/data_1 and b/simulation/chromium/userData/ShaderCache/GPUCache/data_1 differ
diff --git a/src/background.js b/src/background.js
index cee2d69..7985566 100644
--- a/src/background.js
+++ b/src/background.js
@@ -144,7 +144,7 @@ execSync('javac PythonLauncher.java', { cwd: url }, (err, stdout, stderr) => {
 // ipcMain.on('run', (event) => {
 //   sendToPython()
 //   event.reply('success')
-// })
+// }) 
 
 // event listener: play simulation
 ipcMain.on('play', (event, source) => {
@@ -435,7 +435,7 @@ function copyMapFile(event, file) {
   } else {
     filePath = path.join('./resources/simulation/', file + '.csv')
   }
-
+ 
   if (!fs.existsSync(filePath)) {
     console.log('csv文件不存在')
     event.reply('error', 'Map file cannot be found')
@@ -447,7 +447,7 @@ function copyMapFile(event, file) {
   let data = fs.readFileSync(filePath)
   // encode data into base64 for uploading
   data = new Buffer(data).toString('base64')
-  event.reply('mapCopied' + file, data)
+  event.returnValue = data
 }
 
 function sendToPython() {
diff --git a/src/components/FloatButton.vue b/src/components/FloatButton.vue
index d1e9af7..553852b 100644
--- a/src/components/FloatButton.vue
+++ b/src/components/FloatButton.vue
@@ -1,12 +1,11 @@
 <template>
   <div class="d-flex">
     <!-- upload button -->
-    <v-badge color="warning" :value="upload" dot overlap class="mr-3">
+    <!-- <v-badge color="warning" :value="upload" dot overlap class="mr-3">
       <v-btn small icon @click="checkUser(0)"
         ><v-icon>mdi-cloud-upload</v-icon></v-btn
       >
-      <!-- <v-icon @click="dialog = true">mdi-cloud-upload</v-icon> -->
-    </v-badge>
+    </v-badge> -->
     <!-- download button -->
     <v-badge color="warning" :value="download" dot overlap>
       <v-btn small icon @click="checkUser(1)"
@@ -148,25 +147,25 @@ export default {
       this.eventBus.$emit('showSnackbar', 'Upload records successfully!')
     },
 
-    uploadFile(fileName) {
-      // listen to ipcMain event
-      this.$electron.ipcRenderer.on('mapCopied' + fileName, (event, arg) => {
-        try {
-          const data = { base64: arg }
-          const file = new this.leanCloud.File(fileName + '.txt', data)
-          file.save().then(
-            (file) => {
-              console.log(`文件保存完成。objectId：${file.id}`)
-            },
-            (error) => {
-              this.eventBus.$emit('showSnackbarError', 'File uploading failed')
-            }
-          )
-        } catch (error) {
-          this.eventBus.$emit('showSnackbarError', 'File uploading failed')
-        }
-      })
-      this.$electron.ipcRenderer.send('copyMap', fileName)
+    async uploadFile(fileName) {
+      try {
+        const arg = this.$electron.ipcRenderer.sendSync('copyMap', fileName)
+        const data = { base64: arg }
+        const file = new this.leanCloud.File(fileName + '.txt', data)
+        await file.save()
+      } catch (error) {
+        this.eventBus.$emit('showSnackbarError', 'File uploading failed')
+      }
+      this.sleep(5000)
+    },
+
+    sleep(numberMillis) {
+      var now = new Date()
+      var exitTime = now.getTime() + numberMillis
+      while (true) {
+        now = new Date()
+        if (now.getTime() > exitTime) return
+      }
     },
 
     async downloadRecords() {