remove loop and errors

frontend/src/components/selectResource/index.js

@@ -11,7 +11,7 @@ const useStyles = makeStyles(theme => ({
 }));
 
 function CreateResourceCard(resource, classes) {
-    return (<Card className={classes.card}>
+    return (<Card className={classes.card} key={resource.db_letter}>
         <CardContent>
             <Typography variant="h5" component="h2">
                 {JSON.stringify(resource)}
@@ -34,7 +34,8 @@ export default function SelectResource() {
         setResources(rArr);
     }
 
-    loadResources();
+    if (resources === null)
+        loadResources();
 
     return (