Node.js errors
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ExpressJS
Fix “TypeError: Missing parameter name” After Upgrading to Express 5
Express 5 uses a stricter route syntax, and a bare * in a route path now throws “Missing parameter name”. Give every wildcard a name, for example change app.get("*") to app.get("/{*splat}") and "/files/*" to "/files/*splat". Also change optional parameters such as "/:id?" to "{/:id}", and replace regular-expression characters in route strings with an array of paths.
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ExpressJS
Fix “Cannot set headers after they are sent to the client” in Express
This error means your code tried to send a second response to a request that was already answered. The usual fix is to add return before res.json() or res.send() inside an if block, so the function stops after responding. Also check for next() called after a response and for callbacks that run twice.
