Return 404 if Tor relay does not exist

src/controllers/tor.controller.ts

@@ -33,13 +33,17 @@ router.get("/:fingerprint/", (req: Request, res: Response, next: NextFunction) =
     .then(x => {
       const relayData = x[0];
 
-      res.render("tor-relay/show.twig", {
-        "canonical_url": `/tor-relay/${fingerprint}`,
-        "title": `Tor relay - ${relayData["nickname"]}`,
-        "description": `${relayData["nickname"]} is a Tor relay hosted on ${relayData["as"]} ${relayData["as_name"]}.`,
-        "data": relayData,
-        "json_data": JSON.stringify(relayData, null, 2),
-      });
+      if(relayData === undefined) {
+        next();
+      } else {
+        res.render("tor-relay/show.twig", {
+          "canonical_url": `/tor-relay/${fingerprint}`,
+          "title": `Tor relay - ${relayData["nickname"]}`,
+          "description": `${relayData["nickname"]} is a Tor relay hosted on ${relayData["as"]} ${relayData["as_name"]}.`,
+          "data": relayData,
+          "json_data": JSON.stringify(relayData, null, 2),
+        });
+      }
     })
     .catch(next);
 });