Someone please help me khổng lồ overcome this error.
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I received this message when no proxy lớn the hệ thống was specified inside client package.json file.
"proxy": "http://localhost:5000"(where 5000 should be changed khổng lồ whatever port number the server was thiết lập to listen to. In my case it also required hệ thống restart once added)
I had same problem. My workable solution:
app.use(express.static(__dirname)); //here is important thing - no static directory, because all static :)app.get("/*", function(req, res) res.sendFile(path.join(__dirname, "index.html")););
I received this error because an API gọi that I was making was being blocked because of an invalid API key.
Try khổng lồ run in other browser & see if it is working.
If it works there then please try below things and refresh your website.Right click và select Inspect.Go to lớn Application Tab.Clear everything from local storage, session storage & cookies.Refresh your website.
This resolved similar issue in my case và hope it will work for others.
Just make sure that this route must be appeared after at all other routes
app.get("/*", function (req, res) res.sendFile(path.resolve(__dirname, "../client/build", "index.html"));)
Also a react newbie, I hit this issue. Remembering to địa chỉ ReactDOM.render(, document.getElementById("root")); fixed it for me.
I had the same problem. In my case, the class name wasn"t following the patterns (must starts with uppercase). As soon as I corrected it everything started to lớn work well.
I had some cookies mix in the same url (localhost:8080), probably from a previous development, và it was somehow messing with my React project. I only found out because (out of despair) I tried with another browser and it worked. I deleted the cookies and it worked perfectly.
In your react project thư mục install serve if you haven"t installed it before;
npm install -g serveThen serve your project with a static server;
serve -s buildThe build is a folder generated by "npm run build".
That"s it! Visit
Go lớn console --> network tab và see ur API status
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