Dapp-Learning/docs/TROUBLE_SHOOTING-en.md at main · Dapp-Learning-DAO/Dapp-Learning · GitHub

Common problem

When installing front-end dependencies, If NPM or YARN is changed to a domestic source, Still a similar getaddrinfo ENOENT raw.githubusercontent.com error, consider setting up a proxy for it：
```
npm config set proxy http://username:password@server:port
npm config set https-proxy http://username:password@server:port
```
For example：(To set the proxy for YARN, replace the NPM with YARN and the port with the port of the local proxy.)
```
npm config set proxy http://127.0.0.1:2802
npm config set https-proxy http://127.0.0.1:2802
```
Request for test currency testnet
Rinkeby Apply for Rinkeby test currency
Kovan Apply for Kovan test currency1 Apply for Kovan test currency2
Ropsten Apply for Ropsten test currency1