修复异常

src/common/modules.js

@@ -29,7 +29,7 @@ export const config = {
         commit("clearConfig")
         commit("getConfig", {agentSignURL: url})
         let action = "/app/wxcp/portal/agentSign"
-        if (!!params.action) {
+        if (!!params?.action) {
           action = params.action
           delete params.action
         }