fix: add correct fields.

.env

@@ -1,4 +1,3 @@
-
 MONGO_IMAGE=mongo:6.0.2
 REDIS_IMAGE=redis:7.0.0
 ZOOKEEPER_IMAGE=bitnami/zookeeper:3.8

pkg/callbackstruct/group.go

@@ -67,7 +67,7 @@ type CallbackGroupMember struct {
 type CallbackBeforeMembersJoinGroupReq struct {
 	CallbackCommand `json:"callbackCommand"`
 	GroupID         string                 `json:"groupID"`
-	MembersList     []*CallbackGroupMember
+	MembersList     []*CallbackGroupMember `json:"memberList"`
 	GroupEx         string                 `json:"groupEx"`
 }