The getSerial function is not executed by the system application and an error is reported

app/release/output-metadata.json

@@ -11,9 +11,9 @@
       "type": "SINGLE",
       "filters": [],
       "attributes": [],
-      "versionCode": 2,
-      "versionName": "1.0.02",
-      "outputFile": "JtunRouter_v1.0.02.apk"
+      "versionCode": 3,
+      "versionName": "1.0.03",
+      "outputFile": "JtunRouter_v1.0.03.apk"
     }
   ],
   "elementType": "File"

app/src/main/AndroidManifest.xml

@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    android:sharedUserId="android.uid.system"
     >
 
     <uses-feature

app/src/main/java/com/jtun/router/util/DeviceUtil.kt

@@ -62,7 +62,11 @@ object DeviceUtil {
     fun getDeviceSerial():String{
         var serial = ""
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            serial = Build.getSerial()
+            try {
+                //不是系统应用会报错
+                serial = Build.getSerial()
+            }catch (_:Exception){
+            }
             if(serial.isEmpty()){
                 WifiApControl.getInstance().getImei()?.let {
                     serial = it