typo bug fix

frontend/src/conversation/Conversation.tsx

@@ -31,7 +31,7 @@ export default function Conversation() {
 
   return (
     <div className="flex justify-center p-6">
-      {messages.length && (
+      {messages.length > 0 && (
         <div className="mt-20 flex w-10/12 flex-col transition-all md:w-1/2">
           {messages.map((message, index) => {
             return (