diff --git a/utils/baseRequest.js b/utils/baseRequest.js
index c90007b..b6fd476 100644
--- a/utils/baseRequest.js
+++ b/utils/baseRequest.js
@@ -11,7 +11,10 @@ export default function baseRequest() {
     b_ch: "h5",
     b_ts: b_ts,
     b_token: token,
-    b_did: navigator?.userAgent.slice(0,32),
+    b_did:
+      typeof window !== "undefined" &&
+      typeof window.navigator !== "undefined" &&
+      navigator?.userAgent.slice(0, 32),
   };
   // console.log("baseRequest",baseRequest)
   return baseRequest;