diff --git a/public/index.html b/public/index.html
index 4d064c775..be8e12f0f 100755
--- a/public/index.html
+++ b/public/index.html
@@ -72,9 +72,11 @@
         window.location.hash = $(this).attr("name");
         return false;
       });
-
     }
-                                                   
+    // window.addEventListener("popstate", function(e) { 
+    //   console.log("popstate",e);
+    //   history.go(-2);
+    // }, false);                                  
   </script>    
 </body>
 
diff --git a/src/forge/Main/projecthome/Index.jsx b/src/forge/Main/projecthome/Index.jsx
index 178f5dee6..1fc10cfa2 100644
--- a/src/forge/Main/projecthome/Index.jsx
+++ b/src/forge/Main/projecthome/Index.jsx
@@ -74,7 +74,7 @@ function Index() {
               cateList && cateList.length>0?
                 cateList.map((i,k)=>{
                   return(
-                    <a className={cateID === i.id ?"active":""} onClick={()=>setCateID(i.id)}><img src={i.logo_url || Icon} alt="" /><span>{i.name}</span></a>
+                    <a key={k} className={cateID === i.id ?"active":""} onClick={()=>setCateID(i.id)}><img src={i.logo_url || Icon} alt="" /><span>{i.name}</span></a>
                   )
                 })
               :""
@@ -103,7 +103,7 @@ function Index() {
                     {
                       projectsList.map((i,k)=>{
                         return(
-                          <li>
+                          <li key={k}>
                             {
                               i.platform === "educoder" ?
                               <a href="javascript:void(0)" style={{cursor:"default"}}>
diff --git a/src/forge/Main/projecthome/SubList.jsx b/src/forge/Main/projecthome/SubList.jsx
index 7dfed4963..9449521ca 100644
--- a/src/forge/Main/projecthome/SubList.jsx
+++ b/src/forge/Main/projecthome/SubList.jsx
@@ -117,7 +117,7 @@ function SubList() {
             {
               monthList.map((i,k)=>{
                 return(
-                  <li>
+                  <li key={k}>
                     <div className="mInfos">
                       <span className="num">{k+1}</span>
                       <Link target="_blank" to={`/${i.owner && i.owner.login}/${i.identifier}`} className="name task-hide">{i.owner && i.owner.name}/{i.name}</Link>