fix: filter empty chunk

globals/method.go

@@ -0,0 +1,5 @@
+package globals
+
+func (c *Chunk) IsEmpty() bool {
+	return len(c.Content) == 0 && c.ToolCall == nil && c.FunctionCall == nil
+}

manager/chat_completions.go

@@ -198,7 +198,10 @@ func sendStreamTranshipmentResponse(c *gin.Context, form RelayForm, messages []g
 			cache, buffer, group, getChatProps(form, messages, buffer, plan),
 			func(data *globals.Chunk) error {
 				buffer.WriteChunk(data)
+
+				if !data.IsEmpty() {
 					partial <- getStreamTranshipmentForm(id, created, form, data, buffer, false, nil)
+				}
 				return nil
 			},
 		)