diff --git a/.gitignore b/.gitignore
index 40ffa04f2..7c282c207 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@ out-test
 .github
 .idea
 .exe
+_output/
 
 deploy/open_im_api
 deploy/open_im_msg_gateway
diff --git a/internal/msggateway/compressor.go b/internal/msggateway/compressor.go
index d518d6f6d..a37c74ccd 100644
--- a/internal/msggateway/compressor.go
+++ b/internal/msggateway/compressor.go
@@ -3,8 +3,9 @@ package msggateway
 import (
 	"bytes"
 	"compress/gzip"
-	"github.com/OpenIMSDK/Open-IM-Server/pkg/utils"
 	"io"
+
+	"github.com/OpenIMSDK/Open-IM-Server/pkg/utils"
 )
 
 type Compressor interface {
@@ -29,6 +30,7 @@ func (g *GzipCompressor) Compress(rawData []byte) ([]byte, error) {
 	}
 	return gzipBuffer.Bytes(), nil
 }
+
 func (g *GzipCompressor) DeCompress(compressedData []byte) ([]byte, error) {
 	buff := bytes.NewBuffer(compressedData)
 	reader, err := gzip.NewReader(buff)