const model = genAI.getGenerativeModel({ model: 'models/gemini-pro' });

app.js

@@ -89,7 +89,7 @@ Analyze the following content in ${language} language:
 `;
 
   try {
-    const model = genAI.getGenerativeModel({ model: 'gemini-pro' });
+    const model = genAI.getGenerativeModel({ model: 'models/gemini-pro' });
     const contents = [
       { role: 'user', parts: [{ text: systemPrompt }] },
       { role: 'user', parts: [{ text: userContent }] },