diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/handler/AngConfigManager.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/handler/AngConfigManager.kt
index d3eb6751..49adbcef 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/handler/AngConfigManager.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/handler/AngConfigManager.kt
@@ -280,7 +280,7 @@ object AngConfigManager {
                         val config = CustomFmt.parse(JsonUtil.toJson(srv)) ?: continue
                         config.subscriptionId = subid
                         val key = MmkvManager.encodeServerConfig("", config)
-                        MmkvManager.encodeServerRaw(key, JsonUtil.toJsonPretty(srv))
+                        MmkvManager.encodeServerRaw(key, JsonUtil.toJsonPretty(srv)?:"")
                         count += 1
                     }
                     return count
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/util/JsonUtil.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/util/JsonUtil.kt
index b89b52ff..be109de0 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/JsonUtil.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/JsonUtil.kt
@@ -2,6 +2,8 @@ package com.v2ray.ang.util
 
 import com.google.gson.Gson
 import com.google.gson.GsonBuilder
+import com.google.gson.JsonObject
+import com.google.gson.JsonParser
 import com.google.gson.JsonPrimitive
 import com.google.gson.JsonSerializationContext
 import com.google.gson.JsonSerializer
@@ -15,11 +17,13 @@ object JsonUtil {
         return gson.toJson(src)
     }
 
-    fun <T> fromJson(json: String, cls: Class<T>): T {
-        return gson.fromJson(json, cls)
+    fun <T> fromJson(src: String, cls: Class<T>): T {
+        return gson.fromJson(src, cls)
     }
 
-    fun toJsonPretty(src: Any?): String {
+    fun toJsonPretty(src: Any?): String? {
+        if (src == null)
+            return null
         val gsonPre = GsonBuilder()
             .setPrettyPrinting()
             .disableHtmlEscaping()
@@ -34,4 +38,11 @@ object JsonUtil {
             .create()
         return gsonPre.toJson(src)
     }
+
+    fun parseString(src: String?): JsonObject? {
+        if (src == null)
+            return null
+        return JsonParser.parseString(src).getAsJsonObject()
+    }
+
 }
\ No newline at end of file
diff --git a/V2rayNG/app/src/main/java/com/v2ray/ang/util/Utils.kt b/V2rayNG/app/src/main/java/com/v2ray/ang/util/Utils.kt
index 58b6e05d..69bdffd9 100644
--- a/V2rayNG/app/src/main/java/com/v2ray/ang/util/Utils.kt
+++ b/V2rayNG/app/src/main/java/com/v2ray/ang/util/Utils.kt
@@ -295,7 +295,7 @@ object Utils {
 
     fun urlEncode(url: String): String {
         return try {
-            URLEncoder.encode(url, Charsets.UTF_8.toString())
+            URLEncoder.encode(url, Charsets.UTF_8.toString()).replace("+", "%20")
         } catch (e: Exception) {
             e.printStackTrace()
             url