diff --git a/internal/rpc/msg/del_msg.go b/internal/rpc/msg/del_msg.go
index b2252730d..ce1303eb7 100644
--- a/internal/rpc/msg/del_msg.go
+++ b/internal/rpc/msg/del_msg.go
@@ -1,7 +1,6 @@
 package msg
 
 import (
-	"Open_IM/pkg/common/db"
 	"Open_IM/pkg/common/log"
 	commonPb "Open_IM/pkg/proto/sdk_ws"
 	"Open_IM/pkg/utils"
diff --git a/pkg/common/config/config.go b/pkg/common/config/config.go
index dde2e6d62..2a57344e8 100644
--- a/pkg/common/config/config.go
+++ b/pkg/common/config/config.go
@@ -22,7 +22,7 @@ var Config config
 type callBackConfig struct {
 	Enable                 bool `yaml:"enable"`
 	CallbackTimeOut        int  `yaml:"callbackTimeOut"`
-	CallbackFailedContinue bool `callbackFailedContinue`
+	CallbackFailedContinue bool `yaml:"callbackFailedContinue"`
 }
 
 type config struct {
diff --git a/pkg/common/constant/error.go b/pkg/common/constant/error.go
index b41474b03..00a11fd49 100644
--- a/pkg/common/constant/error.go
+++ b/pkg/common/constant/error.go
@@ -91,7 +91,7 @@ const (
 	IntentionalError     = 10007
 )
 
-func (e *ErrInfo) Error() string {
+func (e ErrInfo) Error() string {
 	return e.ErrMsg
 }