handle errors from server

src/Events.js

@@ -115,9 +115,14 @@ export default function Events() {
 
   useEffect(async () => {
     if (events === null) {
+      let result = []
+      try {
         const res = await fetch(endpoint, fetch_options)
-      const result = await res.json()
-      setEvents(events)
+        result = await res.json()
+      } catch (error) {
+        console.error(error)
+      }
+      setEvents(result)
     }
   }, [events])