diff --git a/lib/network/http/http.dart b/lib/network/http/http.dart
index c7768c8..0a58c81 100644
--- a/lib/network/http/http.dart
+++ b/lib/network/http/http.dart
@@ -342,7 +342,11 @@ class HttpStatus {
   /// 504 Gateway Timeout
   static final HttpStatus gatewayTimeout = newStatus(504, "Gateway Timeout");
 
-  static HttpStatus newStatus(int statusCode, String reasonPhrase) {
+  static HttpStatus newStatus(int statusCode, String? reasonPhrase) {
+    if (reasonPhrase == null) {
+      return HttpStatus.valueOf(statusCode);
+    }
+
     return HttpStatus(statusCode, reasonPhrase);
   }
 
diff --git a/lib/storage/histories.dart b/lib/storage/histories.dart
index 023955c..b4c790a 100644
--- a/lib/storage/histories.dart
+++ b/lib/storage/histories.dart
@@ -163,9 +163,9 @@ class HistoryStorage {
     var json = jsonDecode(readAsBytes);
     var log = json['log'];
     String name = formatDate(DateTime.now(), [mm, '-', d, ' ', HH, ':', nn, ':', ss]);
-    List? pages = log['pages'] as List;
-    if (pages.isNotEmpty) {
-      name = pages.first['title'];
+    List? pages = log['pages'] as List?;
+    if (pages?.isNotEmpty == true) {
+      name = pages?.first['title'];
     }
 
     //解析请求
diff --git a/lib/utils/har.dart b/lib/utils/har.dart
index 5088498..95c763e 100644
--- a/lib/utils/har.dart
+++ b/lib/utils/har.dart
@@ -136,7 +136,7 @@ class Har {
     List headers = request['headers'];
 
     var httpRequest = HttpRequest(HttpMethod.valueOf(method), request['url'], protocolVersion: request['httpVersion']);
-    if (har.containsKey("_id")) httpRequest.requestId = har['_id']; // 页面标识
+    if (har.containsKey("_id")) httpRequest.requestId = har['_id'].toString(); // 页面标识
     httpRequest.processInfo = har['_app'] == null ? null : ProcessInfo.fromJson(har['_app']);
     httpRequest.body = request['postData']?['text']?.toString().codeUnits;
     for (var element in headers) {