fix(@rbc/rbc-login): 低版本浏览器报错

develop/@rbc/rbc-login/src/views/login/index.vue

@@ -265,18 +265,20 @@ export default {
         });
     },
 
-    async getVerificationCode() {
+    getVerificationCode() {
       try {
         this.verifyuuid = GMS.util.generateUUID();
-        const res = await GMS.$http.get(
+        GMS.$http.get(
           `/captcha/getCaptcha?clientId=${this.verifyuuid}`,
           {
             responseType: "blob",
           }
-        );
-        if (res.data) {
-          this.verificationImg = window.URL.createObjectURL(res.data);
-        }
+        ).then((res) => {
+          if (res.data) {
+            this.verificationImg = window.URL.createObjectURL(res.data);
+          }
+        })
+        
       } catch (err) {
         console.log(err);
       }