diff --git a/adapter/volcano/volcano.go b/adapter/volcano/volcano.go
index 3453b76..603ff7c 100644
--- a/adapter/volcano/volcano.go
+++ b/adapter/volcano/volcano.go
@@ -132,6 +132,8 @@ func Synthesis(config *dto.ByteDanceTTSConfig, httpClient *HTTPClient, text stri
 			if v3Resp.Usage != nil {
 				log.Printf("TTS synthesis completed, usage: %+v", v3Resp.Usage)
 			}
+			for scanner.Scan() {
+			}
 			break
 		}
 
diff --git a/common/constants.go b/common/constants.go
index 853ca08..ea7a6d9 100644
--- a/common/constants.go
+++ b/common/constants.go
@@ -1,4 +1,4 @@
-package common
+package common
 
 import "time"
 
diff --git a/controller/tts.go b/controller/tts.go
index 7a40da9..03c6297 100644
--- a/controller/tts.go
+++ b/controller/tts.go
@@ -58,11 +58,10 @@ func OpenaiTTSHandler(w http.ResponseWriter, r *http.Request) {
 	r.Body = http.MaxBytesReader(w, r.Body, common.MaxRequestBodySize)
 	body, err := io.ReadAll(r.Body)
 	if err != nil {
-	if strings.Contains(err.Error(), "request body too large") {
-		http.Error(w, fmt.Sprintf("Request body too large (max %d bytes)", common.MaxRequestBodySize), http.StatusRequestEntityTooLarge)
-		return
-	}
-	http.Error(w, "Failed to read request body", http.StatusBadRequest)
+		if strings.Contains(err.Error(), "request body too large") {
+			return
+		}
+		http.Error(w, "Failed to read request body", http.StatusBadRequest)
 		return
 	}