diff --git a/README_CN.md b/README_CN.md
index c82dfc044..604771c52 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -138,7 +138,7 @@ Azure Api 版本，你可以在这里找到：[Azure 文档](https://learn.micro
 OPENAI_API_KEY=<your api key here>
 
 # 中国大陆用户，可以使用本项目自带的代理进行开发，你也可以自由选择其他代理地址
-BASE_URL=https://nb.nextweb.fun/api/proxy
+BASE_URL=https://a.nextweb.fun/api/proxy
 ```
 
 ### 本地开发
diff --git a/app/api/common.ts b/app/api/common.ts
index fc877b02d..adec611b2 100644
--- a/app/api/common.ts
+++ b/app/api/common.ts
@@ -18,7 +18,7 @@ export async function requestOpenai(req: NextRequest) {
   );
 
   let baseUrl =
-    serverConfig.azureUrl ?? serverConfig.baseUrl ?? OPENAI_BASE_URL;
+    serverConfig.azureUrl || serverConfig.baseUrl || OPENAI_BASE_URL;
 
   if (!baseUrl.startsWith("http")) {
     baseUrl = `https://${baseUrl}`;
diff --git a/app/config/server.ts b/app/config/server.ts
index 29e0b78fd..5e7ef4d91 100644
--- a/app/config/server.ts
+++ b/app/config/server.ts
@@ -13,11 +13,11 @@ declare global {
       OPENAI_ORG_ID?: string; // openai only
 
       VERCEL?: "1" | undefined;
+      BUILD_MODE?: "standalone" | "export";
+      BUILD_APP?: string; // is building desktop app
 
       HIDE_USER_API_KEY?: string; // disable user's api key input
       DISABLE_GPT4?: string; // allow user to use gpt-4 or not
-      BUILD_MODE?: "standalone" | "export";
-      BUILD_APP?: string; // is building desktop app
       ENABLE_BALANCE_QUERY?: string; // allow user to query balance or not
       DISABLE_FAST_LINK?: string; // disallow parse settings from url or not
       CUSTOM_MODELS?: string; // to control custom models
diff --git a/app/constant.ts b/app/constant.ts
index ac0ebf4c7..15bf6bcb3 100644
--- a/app/constant.ts
+++ b/app/constant.ts
@@ -8,7 +8,7 @@ export const FETCH_COMMIT_URL = `https://api.github.com/repos/${OWNER}/${REPO}/c
 export const FETCH_TAG_URL = `https://api.github.com/repos/${OWNER}/${REPO}/tags?per_page=1`;
 export const RUNTIME_CONFIG_DOM = "danger-runtime-config";
 
-export const DEFAULT_CORS_HOST = "https://ab.nextweb.fun";
+export const DEFAULT_CORS_HOST = "https://a.nextweb.fun";
 export const DEFAULT_API_HOST = `${DEFAULT_CORS_HOST}/api/proxy`;
 export const OPENAI_BASE_URL = "https://api.openai.com";
 
diff --git a/app/utils/clone.ts b/app/utils/clone.ts
index 0b03b378b..e4cd29111 100644
--- a/app/utils/clone.ts
+++ b/app/utils/clone.ts
@@ -1,3 +1,12 @@
 export function deepClone<T>(obj: T) {
   return JSON.parse(JSON.stringify(obj));
-}
\ No newline at end of file
+}
+
+export function ensure<T extends object>(
+  obj: T,
+  keys: Array<[keyof T][number]>,
+) {
+  return keys.every(
+    (k) => obj[k] !== undefined && obj[k] !== null && obj[k] !== "",
+  );
+}
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index 649e3816d..397ae0d83 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -9,7 +9,7 @@
   },
   "package": {
     "productName": "ChatGPT Next Web",
-    "version": "2.9.10"
+    "version": "2.9.11"
   },
   "tauri": {
     "allowlist": {