mern

来源： https://stackoverflow.com/questions/53194891/got-troubles-to-deploy-on-heroku

问题 After running the install script, the server starts and serves a page displaying the same text after the 'Failed to compile line.' I'm running Windows 10 and auto update just updated my pc today, right before I did the create-react-express install. PS H:\mern-passport> npm start > mern@1.0.0 start H:\mern-passport > if-env NODE_ENV=production && npm run start:prod || npm run start:dev > mern@1.0.0 start:dev H:\mern-passport > concurrently "nodemon --ignore 'client/*'" "npm run client" [0]

问题 After running the install script, the server starts and serves a page displaying the same text after the 'Failed to compile line.' I'm running Windows 10 and auto update just updated my pc today, right before I did the create-react-express install. PS H:\mern-passport> npm start > mern@1.0.0 start H:\mern-passport > if-env NODE_ENV=production && npm run start:prod || npm run start:dev > mern@1.0.0 start:dev H:\mern-passport > concurrently "nodemon --ignore 'client/*'" "npm run client" [0]

问题 I am trying to connect to Atlas MongoDB with the following URI (provided by mongodb connection string ) module.exports = { mongoURI:'mongodb+srv://<user>:<password>@cluster0-un6sk.mongodb.net/test? retryWrites=true' }; //connect to mongoose mongoose .connect(db) .then( ()=>console.log('mongoDB connected')) .catch(err => console.log(err)); I get the following error : { MongoNetworkError: connection 3 to cluster0-shard-00-00-un6sk.mongodb.net:27017 closed at TLSSocket.<anonymous> (C:\Users

问题 I'm following this tutorial. When I run 'npm run server' , as at 13:10 in the video, I get the error: [nodemon] app crashed - waiting for file changes before starting... Why does this happen? Is Port 5000 already in use? Here's the terminal: MyComputer:MERN_SHOPPING_LIST MyName$ npm run server mern_shopping_list@1.0.0 server /Users/MyName/Documents/Web Dev/MERN_SHOPPING_LIST nodemon server.js [nodemon] 1.18.3 [nodemon] to restart at any time, enter rs [nodemon] watching: . [nodemon] starting

问题 I'm using MERN to develop my project, I have tree category with this structure: {id: { type: Number }, parent_id: { type: Number }, name: { type: String }, sub: { type: Boolean }} for example : { "_id": "5dfa22dbb04cee3960868fd8", "id": 1, "name": "Code", "parent_id": 0, "sub": true, "__v": 0 }, { "_id": "5dfa2358b04cee3960868fda", "id": 101, "parent_id": 1, "name": "JavaScript", "sub": true, "__v": 0 }, { "_id": "5dfa68735dc1004134b259ab", "id": 1001, "parent_id": 101, "name": "React", "sub"

问题 I faced this problem when I try to reload my react application web page. Note: In the development phase there was no issue with this kind of thing, but when I deploy it to production I faced this issue. Thank you. Refused to load the image 'http://104.248.153.121:8080/favicon.ico' because it violates the following Content Security Policy directive: "default-src 'none'". Note that 'img-src' was not explicitly set, so 'default-src' is used as a fallback. Here is an error image log: Error Log

问题 I have a weird issue with, I guess, polyfills. I used MERN stack for my app, and pushed to Heroku. For some reason, on my computer in Chrome I can view the website, however, on other computers I'm getting a blank page and the error in console: 'SCRIPT5007: Unable to get property 'apply' of undefined or null reference' it points to this chunk of code, and, apparently, is linked to Redux: return funcs.reduce(function (a, b) { return function () { return a(b.apply(undefined, arguments)); }; });

问题 I'm testing out the Mern Stack (Mongo Express React/Redux Node) and set it up with development with no issue. Now I'm trying to deploy to Heroku. I did a git push heroku master just like normal, but when I check out the website I see Heroku's Application Error. I added a MongoDB through Heroku, and changed my heroku config variables, so it uses that db (I think I did this correctly). So I check into logs: npm ERR! file sh npm ERR! code ELIFECYCLE npm ERR! errno ENOENT npm ERR! syscall spawn

问题 First post here and I'm on wits end, any help would be kindly appreciated. When trying to access the Login component of my MERN app on the production version, I get a series of the following type errors shown in this image: My app (https://github.com/ahaq0/kumon_schedule) works perfectly fine locally and was working perfectly fine hosted on heroku earlier today. I tried rolling back all of the changes in the code that I made today to no avail. Similarly, I checked the package.json (and .lock)