changed variable name to postId

functions/handlers/post.js

@@ -61,7 +61,7 @@ exports.getAllPosts = (req, res) => {
                 userImage: doc.data().userImage,
                 microBlogTitle: doc.data().microBlogTitle,
                 microBlogTopics: doc.data().microBlogTopics,
-                id: doc.id,
+                postId: doc.id,
               });
             });
             return res.status(200).json(posts);

twistter-frontend/src/pages/user.js

@@ -95,7 +95,7 @@ class user extends Component {
    
     let posts = classes.data
     let recentPostsMarkup = posts ? (
-      this.state.posts.map(post => <Posts key={post.id} post={post}/>)
+      this.state.posts.map(post => <Posts key={post.postId} post={post}/>)
     ) : ( <p> Loading... </p> );
 
     return (