Update index.js

index.js

@@ -507,8 +507,10 @@ async function handleStreamResponse(response, model, res) {
                 if (!line.trim()) continue;
                 const trimmedLine = line.trim();
                 if (trimmedLine.startsWith('data: ')) {
-                    const content = trimmedLine.substring(6);
+                    const data = trimmedLine.substring(6);
                     try {
+                        var content = data.trim();
+                        if(!content)continue;
                         const linejosn = JSON.parse(content);
                         if (linejosn?.error?.name === "RateLimitError") {
                             var responseData = MessageProcessor.createChatResponse(`${linejosn.error.name},请重新对话`, model, true);