check for empty tokens

src/middlewares/auth.js

@@ -20,6 +20,7 @@ const validateInviteToken = async (req, res, next) => {
     if (process.env.REQUIRE_TOKEN != "true") return next();
 
     const { inviteToken } = req.body;
+    if (!inviteToken || inviteToken == "") return res.status(400).send("Token is not valid");
     fs.appendFileSync('./inviteTokens.txt', '');
     const inviteTokens = fs.readFileSync('./inviteTokens.txt').toString().split('\n');
     let tokenValid = false;